Questions on Geometry: Triangles answered by real tutors!

Tutors Answer Your Questions about Triangles (FREE)

Question 930234: the altitude of an equilateral triangle is 4.2 meters long find the perimeter of the triangle
Click here to see answer by TimothyLamb(4379)

Question 930355: b=4, c=3,B=40 degrees
determine whether the given information results in one triangle, two triangle, or no triangle. Solve each triangle that results.
Click here to see answer by Fombitz(32388)

Question 930409: What is the greatest possible area of a triangle with one side of length 7 and another side of length 10. A) 17 b)34 c)35 d) 70 e) 140
Click here to see answer by Fombitz(32388)

Question 930437: find the angles of a triangle with sides of 10, 15, 20

Click here to see answer by Alan3354(69443)

Question 930440: If A= 40 degrees B = 60 degrees b= 30 find:
a=
c=
angle C=
Click here to see answer by Alan3354(69443)

Question 930441: If c = 24, A= 37 degrees, C = 45 degrees find:
angle B=
a=
b=
Click here to see answer by Alan3354(69443)

Question 930566: A ramp inclined at 25 degrees has a vertical rise of 30 m. Find the length of the ramp
Click here to see answer by Edwin McCravy(20054)

Question 930548: the hypotenuse is 80cm, the base is 84cm, the height is 48cm, find the other side of the triangle
Click here to see answer by ewatrrr(24785)

Question 930622: the perimeter of a triangle is 60 feet. One leg is 12 feet long. Of the two unknown sides,one of them is twice as long as the other. Find the lengths of the two unknown sides
Click here to see answer by ewatrrr(24785)

Question 930505: The length of the longer leg of a right triangle is
13cm
more than three times the length of the shorter leg. The length of the hypotenuse is
14cm
more than three times the length of the shorter leg. Find the side lengths of the triangle.
Click here to see answer by ewatrrr(24785)

Question 930524: If a = 10 b= 20 and angle of C= 30 degrees solve for the missing pieces of the triangle:
angle A=
angle B=
c=
Click here to see answer by lwsshak3(11628)

Question 930696: Determine the range of possible side lengths of the third side AB of ABC from greatest to least.The pic is at https://bossier.owschools.com/media/g_geo_ccss_2013/4/img_geou04p28d_05.gif

Click here to see answer by amariya(8)

Question 930798: if measure of angle A=60 degrees and side AB=5, then side BC=? It is a right triangle with the 90 degree angle at the top point of the triangle. So the triangle has A on right point of triangle, B on top point of triangle(where 90 degree angle is) and C on left point of triangle. I tried to solve by using tan, but the answer is not correct. The answer sheet says the answer is 5 sq rt 3. We haven't been taught how to do sine or cosine yet so I don't believe that will help me.
Click here to see answer by mananth(16946)

Question 931002: A triangle has one angle that measures 34 degrees, one angle that measures 50 degrees, and one angle that measures 96 degrees.
What kind of triangle is it?
A. equilateral triangle
B. right triangle
C. isosceles triangle
D. scalene triangle

Click here to see answer by jamiya(9)

Question 931903: Algebraically find the centroid using three vertices:
A(6,2)
B(10,4)
C(-2,8)
Click here to see answer by TimothyLamb(4379)

Question 931875: The lengths of the sides of a triangle are 3, 4, and 6. If the length of the shortest side of a similar triangle is 5, find the length of its longest side.
Click here to see answer by TimothyLamb(4379)

Question 932109: I have a worksheet called 45 -45 -90'triangles and its on special triangles and I don't get how to work out the problem nor answer the problem
1.AB =7
AC =?
CB =?
&
5. AB =2.3
AC =?
CB =?
9. AC =6 x (the sq root of 2)
AB?
CB?
Click here to see answer by stanbon(75887)

Question 932117: Omg halp plz I need halp I'm dying irl
Click here to see answer by Fombitz(32388)

Question 932035: Sketch ∆ABC with vertices:
A(6,2) B(10,4) and C(-2,8)
Label the midpoints of each side
P, Q, and R respectively
Algebraically find the centroid.
Click here to see answer by KMST(5328)

Question 932614: If 2sides of a triangle are 8m and the corner of the two sides is 90 degrees, what is the lenght of the third side?
Click here to see answer by rfer(16322)

Question 932715: sin180*cos160what's value
Click here to see answer by MathLover1(20849)

Question 932797: how do i know if the numbers equal s right triangle for example 15,36,39

Click here to see answer by MathLover1(20849)

Question 933002: Triangle ABC is equilateral; each side is 20cm long. What is the length of the radius of the circle inscribed into this triangle?

(No picture in text)
Click here to see answer by ewatrrr(24785)

Question 933030: How do I find the range of the hypotenuse of a triangle?
Ex: 3 and 8 ___ I know to find the range of the third side you must add and subtract, but what about to find the hypotenuse?

Click here to see answer by jim_thompson5910(35256)

Question 933162: Two sides of an equilateral triangle have lengths 2x - 2 and 3x - 6. Which could be the length of the third side: 10 - x or 6x - 5?
Click here to see answer by richard1234(7193)

Question 933272: In the figure if de||bc and ad=ae,then prove that abc is an isosceles triangle.
Click here to see answer by richard1234(7193)

Question 933583: Find the area of a triangle whose base is (x-2)cm and height is (x-5)cm.
Click here to see answer by Alan3354(69443)

Question 933683: the lengths of two sides of a triangle are 8cm and 10cm identify the range of the possible lengths for the third side?
Click here to see answer by KMST(5328)

Question 933676: How would you write a similarity statement of a triangle?
Click here to see answer by MathLover1(20849)

Question 933855: Hi,
I am Arun. I have problem in solving triangles. In a triangle ABC, AC is 10, BC is 0.025 and AB is 9.978. And the angle between BCA is said to be 30 degree. I need to find the other two angles. I have used the cosine law of triangles and many other methods. For each method, i am getting a different solution for these two angles CAB and CBA. Can you help me in solving this?.
Thank you. Waiting for your response.
Click here to see answer by Alan3354(69443)

Question 933844: In the right triangle ABC, find the measure of side b when mA = 53 and the
hypotenuse (side c) is 18 cm.
Click here to see answer by Fombitz(32388)

Question 933751: If two students are constructing equilateral triangles with one side of 4 inches, explain whether the triangles constructed must be congruent.
Click here to see answer by Fombitz(32388)

Question 934036: Which set of line segments could create a right triangle?
5, 6, 11
5, 9, 10
5, 13, 18
5, 12, 13

Click here to see answer by richwmiller(17219)

Question 934039: A student has sticks of lengths 5 cm and 9 cm. She wants to use a third stick to form a triangle. What are the possible lengths of the third side?

Click here to see answer by Techpriest(29)

Question 934093: The measures of two angles of a triangle are in the ratio 2:3. If the third angle is 4 degrees larger than the larger of the other two angles, find the measure of an exterior angle at the third vertex.
Click here to see answer by lwsshak3(11628)

Question 934151: In △RST, m∠T is 6 more than the m∠R, and the m∠S is 9 more than the m∠T. What is the measure of each angle?
I have no idea how to do this problem and it is the last question on my take-home test.
Click here to see answer by Theo(13342)

Question 934267: Line n contains (2,5) and is perpendicular to the line 2x-2y=-3. what is the equation of line n in the slope intercept form?
Click here to see answer by josgarithmetic(39616)

Question 934265: The legs of an isoceles triangle have lengths 2x+3 and -3x+28. The base has length 2x+5. What is the length of the base?
Click here to see answer by josgarithmetic(39616)

Question 934375: In the figure below XZ is parallel to YZ. Find the measure of angle XYZ and the measure of angle ZYX.
I don't know if BBCode is here so I made a sketch of the problem in a Google Document. Here is the picture: http://imgur.com/QLcZH7T
I set it up as so:
3n-7+n = 180
4n = 187
n = 46.75
I don't think this is right because on my whole paper, which is 25 questions, this is the only answer that came out to be a decimal and I highly doubt it's right so I came here for help.
Thank you if you can help.
If BBCode is allowed:
[img]http://i.imgur.com/QLcZH7T.png[/img]
Click here to see answer by jim_thompson5910(35256)

Question 934370: The measure of the largest angle of a triangle is twice the measure of the smallest angle. The measure of the third angle is 10 degrees less than the measure of the largest angle. I don't know if I set this up right, so I am looking for the right answer.
What I did:
X + 1/2X - 10 = 180
1.5X = 190
X = 126.6 repeating.
I don't think that's right.
Thank you.
Click here to see answer by MathLover1(20849)

Question 934433: A triangle has side lengths of 21,29 and 20 what is the area of incenter circle ???
Click here to see answer by richard1234(7193)

Question 934478: The perimeter of the triangle is 150cm. What is the value of x?
Click here to see answer by Alan3354(69443)

Question 934596: The three vertices of a triangle are as follows:
(-4,5),(-4,-3), and (2,-3).
Give the length of the longest of the longest side.
Give your answer as a simplified radical.
Click here to see answer by MathLover1(20849)

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