Questions on Geometry: Triangles answered by real tutors!

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Question 717056: The perimeter of a rhombus is 40 cm, and one diagonal is 12 cm long. How long is the other diagonal?
This question was already answered, but I don't understand the solution posted. Please help me!
Click here to see answer by KMST(5328)

Question 717156: Find the unknown angle measure of a right triangle that has an angle of 35 degrees.
Click here to see answer by Alan3354(69443)

Question 717155: Find the unknown angle measure of a triangle that contains an angle measuring 41 degrees and another that is 46 degrees
Click here to see answer by Alan3354(69443)

Question 717250: if one side of a triangle is 6cm and the other is 8cm what is the last lines measurement?
Click here to see answer by solver91311(24713)

Question 717246: if a right triangle has a hypotenuse of length 21 and a leg of length of14 what is the length of the other leg of the triangle?

Click here to see answer by checkley79(3341)

Question 717363: given 6ft,8ft,9ft lengths is this a right triangle? how do you determine
Click here to see answer by Alan3354(69443)

Question 717363: given 6ft,8ft,9ft lengths is this a right triangle? how do you determine
Click here to see answer by stanbon(75887)

Question 717317: what is the name of an triangle thats has an angle of 13,98,and, 68

Click here to see answer by lynnlo(4176)

Question 717417: A right scalene triangle has two acute angles. One measures 57 degres. What is the measure of the other acute angle?

Click here to see answer by Alan3354(69443)

Question 717709: Use 1.7 as the value of square root of 3 what is the are od equilateral of triangle abc? The base is 12 miles
Click here to see answer by solver91311(24713)

Question 717752: what is the measure of each base angle of an isosceles triangle if its third angle measures 36 degrees and its two congruent sides measures 20 units?
Click here to see answer by DrBeeee(684)

Question 717950: Given the two side lengths, 6 and 7, what is the longest possible length of the third side of a triangle?
Click here to see answer by oscargut(2103)

Question 717966: Find 4 values for k so that (-1,2), (-10,5) and (-4,k) are the vertices of a right triangle.
Click here to see answer by josgarithmetic(39616)

Question 718140: Is this a true statement?: The length of the two smaller sides of a triangle must have a sum greater than or equal to the length of the longest side.
Click here to see answer by stanbon(75887)

Question 718147: if a triangle has sides of 6,8 and 12, what is the perimeter of the triangle formed by connecting the midpoints of the sides of the original triangle?

Click here to see answer by oscargut(2103)

Question 718758: can triangle can be formed by three segments with the lengths of 27 inches, 31 inches, and 48 inches?
Click here to see answer by jim_thompson5910(35256)

Question 718758: can triangle can be formed by three segments with the lengths of 27 inches, 31 inches, and 48 inches?
Click here to see answer by Alan3354(69443)

Question 718862: if a=43 degrees, BDC=57 degrees, and y=11, find x.
Click here to see answer by Alan3354(69443)

Question 718896: cos 30 degrees cos 100 degres + sin 30 degrees sin 100 degrees
Click here to see answer by solver91311(24713)

Question 718790: A rectangle field is 20 meters longer than it is wide. When Patrick walks from one corner to the opposite corner, he makes an angle of 55 degrees with the shorter side of the field. Find the width of the field.
Click here to see answer by ankor@dixie-net.com(22740)

Question 719057: the base of a
isosceles triangle is 12 cm and
its perimeter is 32 cm.find the
area of the triangle?
Click here to see answer by lwsshak3(11628)

Question 719271: How do you find the area of a triangle using the measurements 15.7 9.4 and 12.6?
Thanks so much!
Click here to see answer by solver91311(24713)

Question 719580: triangle is 6 centimeters long and 4 centimeters wide. What is the area of the triangle?
Click here to see answer by checkley79(3341)

Question 719871: The sum of the lengths of any two sides must be greater that the third side. If the triangle has one side that is 20 inches and a second side that is 4 inches less than twice the third side. What are the POSSIBLE lengths of the 2nd and 3rd sides. 2nd side from (XX) to (XX) and third side from (XX) to (XX).
How do you figure this out please help.
Thanks
Click here to see answer by nahjaeo(8)

Question 719891: Two points, X and Y. Jane walks 90 m to another point z.
Click here to see answer by stanbon(75887)

Question 720249: The shorter leg of a right triangle is 12 yards. If the hypotenuse is 20 yards, how long is the other leg?
Click here to see answer by Alan3354(69443)

Question 720556: two sides of a triangle measure 13 meters and 8 meters. how many integer lengths of the third side are possible?
Click here to see answer by ankor@dixie-net.com(22740)

Question 720780: what is triangle x 36
Click here to see answer by Alan3354(69443)

Question 720944: if the lengths of the sides of a triangle ABC is 3,x+3, and 9 what are all possible values of x?
Click here to see answer by Edwin McCravy(20054)

Question 720944: if the lengths of the sides of a triangle ABC is 3,x+3, and 9 what are all possible values of x?
Click here to see answer by checkley79(3341)

Question 720964: A triangle with 2 perpendicular sides that are equal in length can be classified as which kind of triangle?
A- A right triangle
B- An equiangular triangle
C-An acute triangle
D- A scalene triangle
Click here to see answer by MathLover1(20849)

Question 720963: An Obtuse triangle in which one the the angles measures 45 degrees is classified what kind of triangle?
A-A right triangle
B-An equiangular triangle
C-An acute triangle
D-A scalene triangle
Click here to see answer by MathLover1(20849)

Question 720981: triangle QRS has vertices at Q(2,6),R(-3,1), and S(6,2). determine the perimeter of the triangle. i just need help how to do it. thnxs
Click here to see answer by josgarithmetic(39616)

Question 721400: How do I find the length of the hypotenuse of a 45-45-90 degree triangle with a leg length of 14 cm? Also, how can I find the length of the leg of a 45-45-90 degree triangle with a hypotenuse length of 25in.?
Click here to see answer by rfer(16322)

Question 721488: What is the greatest angle of a triangle with side lengths 13, 24, and 32 inches?
Click here to see answer by Alan3354(69443)

Question 721473: I'm in grade 10 and I have an assignment that requires me to make a "cheat sheet" that can be used on an upcoming test. The sheet will be marked and I will be able to use it to help me later on. The sheet given has 5 questions that cover all of the material on the test, we have to show the process of how to get the answer.
The question is: "2.What is the difference between an altitude and a median? If you knew the coordinates of the vertices of a triangle, how would you determine the equations of an altitude line and a median line?"
So far I have, "
Median: The line segment joining any vertex of a triangle to the mid-point of its opposite side.
Altitude: The perpendicular drawn from a vertex to the opposite side of the vertex of the triangle."
All I need to know is, using the endpoints, how would you get an equation in y=mx +b form, for an altitude and median line. ( as said in the question above )
Thanks so much,
A grade 10 student.

Click here to see answer by mananth(16946)

Question 721521: Triangle ABC side AB is 24units, Side BC is 32units, and side AC is 37units, what is the measure of angle C?

Click here to see answer by josgarithmetic(39616)

Question 721386: One leg of a 45-45-90 right triangle measures 14cm. Find the exact perimeter.
Click here to see answer by ankor@dixie-net.com(22740)

Question 721550: Two triangles can be formed using the given measurements. Solve both triangles.
A=56 degrees , a=17 , b=19
Click here to see answer by Edwin McCravy(20054)

Question 721781: Can I calculate the length of the 3rd side if I have the length of two sides? Thanks!
Click here to see answer by stanbon(75887)

Question 722196: Which type of polygons are always similar?
Click here to see answer by MathLover1(20849)

Question 722195: If two isosceles triangles have congruent vertex angles then what are the triangles ?
Click here to see answer by MathLover1(20849)

Question 722199: Which of the following is equal to the ratio sin x/ cos x ?
a.sin x
b.cos x
c.tan x
d.cot x

Click here to see answer by MathLover1(20849)

Question 722346: The segment connecting point A(1,2) to point B(4,2) is one side of a 30�-60�-90� triangle, , but you do not know which side. It could be the shorter leg, the longer leg or the hypotenuse.
How many 30�-60�-90� triangles can be drawn under these conditions?
For each triangle, state:
� the coordinates of point C.
� the lengths of the 3 sides.
I have all the lengths of all sides of every triangle and the coordinate C for every triangle except four.
I have all 12 possible triangles, but when AB is the hypotenuse, I cannot find the coordinate of C.
Please help me find a way or a formula to solve for coordinate C when I have all side lengths and two other points? Thank you very much!
Click here to see answer by stanbon(75887)

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