Questions on Geometry: Triangles answered by real tutors!

Tutors Answer Your Questions about Triangles (FREE)

Question 600862: How many times does the graph of y=3x^2-4x+6 intersect with the the x axis?

Click here to see answer by nerdybill(7384)

Question 600854: The height of a triangle is 10 inches less than the three times the base. the area is 156 square inches. what is the base of the triangle?

Click here to see answer by nerdybill(7384)

Question 601237: determine if DEF with vertices D(6,-6), E(39,-12), and F(24,18) is
scalene, isosceles, or equilateral.
i tried really hard to figure this out but im not sure if my answer is correct?
Click here to see answer by jim_thompson5910(35256)

Question 601344: A right triangle has perimeter 80 inches. The length of the hypotenuse is 34 inches. What is the length of the two shorter sides?
Click here to see answer by flame8855(424)

Question 601454: what is x when side lengths 5, 10 and x make an acute triangle?
Click here to see answer by Alan3354(69443)

Question 601486: What is the length of the longest side of a triangle that has vertices at (7, 6), (7, 1), and (-5, 6)?

Click here to see answer by solver91311(24713)

Question 601480: Prove : that triangle ABC is Isosceles. Where AD __l__ BC
Can you tell me where I went wrong and what is the correct answer?
~
1: < BAD = angle CAD reason Given

__ ___
2: AD __l_ BC reason Given

3angleBDA and angle are right angles = reason Definition of perpendicular

4 < BDA is congruent to CDA reason: transfer property of equality

5 BD is congruent to CD reason Definition of a bisector therom

6 AD is congruent to CD reason Reflexive property of congruency

7angle ABC is congruent to angle ADC reason SAS congruency of triangles

8Angle ABC is congruent to ACD of a congruent triangle are congruent.
8BReason: reason corresponding parts of a congruent triangle are congruent.

9. ABC is ab isosceles triangle reason Definition of an isosceles triangle is a triangle that has 2 angles and 2 sises that are congruent.
Click here to see answer by Edwin McCravy(20054)

Question 601126: I am having trouble with some homework and need your help please. The question is:" What is the area of a triangle that measures 7cm on both sides,6cm for base and 6cm in height" I doesn't make sense to me, after all I'm only a sixth grader. The picture they provided for me has a doted line going from the middle up. Then its a regular Isosceles triangle. Please help because this homework is due tomorrow.
Click here to see answer by richard1234(7193)

Question 601573: IF AN OBTUSE TRIANGLE HAS A BASE THAT IS 9 INCHES AND HEIGHT THAT IS 12 INCHES WHAT IS THE AREA OF THE TRIANGLE ?
Click here to see answer by mananth(16946)

Question 601574: IF A TRIANGLE HAS A HEIGHT OF 5 CENTIMETERS AND A BASE OF 3 CENTIMETERS THEN THE AREA EQUALS ?
Click here to see answer by lawdej(58)

Question 601750: I have to solve several problems on the area of triangles. I know that the formula is A=1/2 x b x h.
My first problem is A=1/2 x 4 x 5 I just need to know how to solve the problem and I can do the rest of the questions. Do I change the fraction to a decimal? If so the answer I got was 10, is that correct?
Click here to see answer by stanbon(75887)

Question 601756: If the triangle contains two angles having measures of 99 degrees and 50 degrees what is the measure for the third angle?
Click here to see answer by Alan3354(69443)

Question 601811: If a triangle has an area of 81 meters and a base of 9 meters then what is the height ?
Thanks !
Click here to see answer by w_parminder(53)

Question 601947: If the base is 4 ft and the height is 2 ft what is the area?
Click here to see answer by Alan3354(69443)

Question 601946: Is it possible for a triangle to have sides with the given lengths:
20 m, 22 m, and 24 m
Click here to see answer by Alan3354(69443)

Question 601966: . triangle ABC is an acute triangle. two of its sides measure 11cm and 14cm. what is the range of possible values for its third side? show work

Click here to see answer by Alan3354(69443)

Question 602303: A triangle with an area of 120 cm2 has a height of 10 cm. What is the triangle's base measurement?
Click here to see answer by nerdybill(7384)

Question 602476: the length of the sides of a triangle are 6 inches, 8 inches, and 12 inches. Find the area of the triangle
Click here to see answer by ewatrrr(24785)

Question 602476: the length of the sides of a triangle are 6 inches, 8 inches, and 12 inches. Find the area of the triangle
Click here to see answer by jim_thompson5910(35256)

Question 602769: Hello, would any tutors please help me with these problems? I don't really understand how to do them. If also you can explain how you did them, I would be really thankful. Thank you for your time!!!
http://i90.photobucket.com/albums/k250/robinahood11/photo22.jpg
Click here to see answer by mananth(16946)

Question 602225: IF AN OBTUSE TRAINGLE HAS A BASE OF 7 INCHES AND HEIGHT OF 10 INCHES WHAT IS THE AREA OF THE TRIANGLE ?
Click here to see answer by asuar010(338)

Question 602483: the angle of elevation to the top of a building from a position on the ground 100 meters from the base of the building is 40. how tall is the building, to the nearest meter?
Click here to see answer by asuar010(338)

Question 602870: The shorter leg of a 30�-60�-90� triangle measures 10 in. What is the length of the longer leg?
Click here to see answer by josmiceli(19441)

Question 602912: In PQR, mP = 60, mQ = 30, and mR = 90. Which of the following statements about PQR are true?

Click here to see answer by solver91311(24713)

Question 603045: The non-right angles of a right triangle are in the ratio 1:5. Write an equation that could be used to find the measure of each angle?
Click here to see answer by stanbon(75887)

Question 603496: 1.if the adjacent side is six and theres a right angle, a 34 degree angle and a 56 degree angle, whats the hypotenuse
2. if a right triangle has two sides that are 12(opposite) and 13 (hypotenuse) what are the other two angles
3.A plane begins it descent at an angle of depression of 20 degrees. If it is 3600' high, how far is it from the airport
4.A palm tree is leaning 12 degrees from the vertical. If a coconut drops 8' to the ground, how far will it land from the base of the tree
5.A moving company has a ramp that fits on the truck bed to help them move furniture into and out of the truck. The truck bed is 3' above the ground and the ramp forms a 15 degree angle with the ground. How long must the ramp be
the answers would be great but if you could also show me how to do it, u would help me a lot, i'm so confused.
Click here to see answer by solver91311(24713)

Question 603766: What would the value of x be in a right angled triangle whose hypotenuse is 25 and other sides are 4x and x?
Click here to see answer by htmentor(1343)

Question 603782: The hypotenuse of a right traingle measures 9 inches, and one of the acute angles measure 36 degrees. What is the area of the triangle?Round to the nearest square inch.
Click here to see answer by nerdybill(7384)

Question 604049: A right triangle has a perimeter of 24, what are the length of its 3 sides if they can only be whole numbers?
Click here to see answer by richard1234(7193)

Question 604179: A rectangle has a diagonal of 10cm and length of 8cm. Find its width.(triangle has no diagonal)

Click here to see answer by lawdej(58)

Question 604340: how do i find both the area and height of an equalateral triangle with all sides 5.4 yeards
Click here to see answer by stanbon(75887)

Question 604357: Solve for rest of sides and angles:
Angle A=64�, side a=7, side b=17
Click here to see answer by Alan3354(69443)

Question 604448: The area of a triangle is 40 sq. inches. If the base of the triangle is 10 inches, what is its height?
Click here to see answer by alicealc(293)

Question 604437: Right triangle ABC with legs AB= 9 millimeters and BC= 12 millimeters is the base of a right prism that has a surface area of 450 square millimeters. What is the height of the prism?
Click here to see answer by alicealc(293)

Question 604642: The hypotenuse of an isosceles right triangle has a length of 9 meters. Find the leg lengths to the nearest hundredth of a meter?
Click here to see answer by lwsshak3(11628)

Question 604767: Given the triangle below, find all six trig functions in simplest radical form.
Opposite=4 Adjacent=2radical5 Hypotenuse=6
Click here to see answer by lawdej(58)

Question 604936: Which is a possible lenght for the third side of a triangle whose other two sides are 10 and 18?
Click here to see answer by scott8148(6628)

Question 605086: Ok... So I have the angle of 25 degrees, and the height is 4.89 meters how do I find the horizontal length and/or the long side of the triangle?
Click here to see answer by stanbon(75887)

Question 605217: how do i find the side lengths of an isosceles right angled triangle if the hypotenuse is 16?
Click here to see answer by alicealc(293)

Question 605292: if the area of a triangle is 24cm to the 2nd power, what is the length of leg ab?
Click here to see answer by fcabanski(1391)

Question 605110: In a 30�- 60�- 90� right triangle, the shorter leg is 9 cm. How long are the other two sides of the triangle?
A. -longer leg 9 times the square root of 2 -hypotenuse 18
B. -longer leg 9 times the square root of 3 -hypotenuse 18
C. -longer leg 18 -hypotenuse the square root of 3
D. -longer leg 18 -hypotenuse the square root of 2
Click here to see answer by asuar010(338)

Question 605277: if two sides of a triangle are 9 cm and 15 cm in length, which COULD be the measure of the third side? 23 cm, 24 cm, 25 cm, 26cm
Click here to see answer by lynnlo(4176)

Question 605351: a triangle contains two angles having measures of 98 and 42.find the measure of the third angle
Click here to see answer by solver91311(24713)

Question 605944: 99 degrees, 35 degrees and 46 degrees , what triangle this is ?
Click here to see answer by jim_thompson5910(35256)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690