Questions on Geometry: Triangles answered by real tutors!

Tutors Answer Your Questions about Triangles (FREE)

Question 389075: what is the measurement of D in the triangle DEF when F is 116 degrees?
Click here to see answer by Alan3354(69443)

Question 389174: How do you find x if your given the area of a right triangle and give the size of one of the triangles.by the way the area is 15.and the number given to you is 5 for one of the sizes of a right triangle.
Click here to see answer by robertb(5830)

Question 389062: 7. If two polygons are ___________ if their verticals can be paired so that corresponding angles are congruent and corresponding sides are in proportion.

8. if triangle PQR ~ triangle STU, then < t ≅ _________ ?
Click here to see answer by robertb(5830)

Question 389248: If the vertices of an equilateral triangle are (0,4), (0,0), and (2square root3, 2), how many of these triangles are possible?
Click here to see answer by richard1234(7193)

Question 389248: If the vertices of an equilateral triangle are (0,4), (0,0), and (2square root3, 2), how many of these triangles are possible?
Click here to see answer by ewatrrr(24785)

Question 389289: Find the value of x.
A triangle. One exterior angle is 70 and the nonadjacent interior angles are X and 2X + 10.
Click here to see answer by stanbon(75887)

Question 389474: A right triangle has area 19 and the sum of its two legs is 20. Compute the length of the hypotenuse.
Click here to see answer by MathLover1(20849)

Question 389532: I am having trouble with this problem on this take home test that is due soon. The problem is: Two triangles are similar. The lengths of the sides of the smaller triangle are 4, 6, 7. The longest side of the larger triangle is 21. What is the perimeter of the larger triangle?
I know the perimeter of the smaller triangle is 17. But how does that help me find out the perimeter of the larger triangle when the only information I have is that they are similar and its largest side is 21? This question is multiple choice and I know I can cross out answer 1) 17 and answer 2)18. The last two answers are 42 and 51 and I just don't understand how it would be either. Can you please help!?
Click here to see answer by mananth(16946)

Question 389505: In my pre ap geometry class, we have been working with tan, sin, and cos to find angles and lengths using the math solver on the calculator. I am having difficulty with this problem(there is a 90 degree angle):
A ski slope has a 42 degree incline and is 170 yards long. Find the vertical drop(height) of the slope.
Click here to see answer by josmiceli(19441)

Question 389517: Hello.
We are learning Inequalities for Sides and Angles of a Triangle in class.
A question asks:
Suppose angle WXY = angle XYZ. Which angle or of XYZ or WXY has the greatest measure?
The answer the book gives is angle W. I am not sure why. Can someone please explain?
Thanks.

Click here to see answer by Alan3354(69443)

Question 386801: the perimeter of a triangle is 59 cm. the longest side is 7 cm less then the sum of the other two sides. twice the shortest side is 10 cm less than the longest side. find the perimeter of each side of the triangle.
Click here to see answer by gwendolyn(128)

Question 389499: the lengths of two sides of an obtuse triangle are 12 and 16. which could NOT be the length of the third side?
F 9
G 10
H 20
J 25
Click here to see answer by richard1234(7193)

Question 389498: If (2,4) is the location of the centroid of a triangle, which CANNOT be the coordinates of the vertices of the triangle?
F (0,0), (0,6), (6,6)
G (3,4), (3,-2), (0,6)
H (3,-2), (1,6), (2,8)
J (2,0), (1,8), (3,4)
i don't understand what i should do first to even try and solve it.
Click here to see answer by richard1234(7193)

Question 389638: I have the answer to this question, I am just not sure if it is right or not. I am using sin, cos, and tan in the math solver of the calculator.
Question: To find the length of a diagonal of a rectnagular city block, a surveyor determined the lenth of the block was 750 feet and the angle made by the diagonaland the length was 35 degrees. How long is the diagonal? Round your solution to the nearest hundreth of a foot.
I got the answer of 915.58 feet by putting cos(35)=(750/x) in the math solver
and a thank you in advance to who helps me with this problem :)

Click here to see answer by Alan3354(69443)

Question 389742: Two angles of a triangle have measures of 70 degrees and 85 degrees. Which of the following is NOT the measure of an exterior angle of the triangle?
1) 110 degrees
2) 155 degrees
3) 105 degrees
4) 95 degrees
Click here to see answer by rfer(16322)

Question 389743: In triangle QRS, the measure of angle Q = X, the measure of angle R = (8X-40), and the measure of angle S = 2x. What type of triangle is triangle QRS?
1) isosceles
2) right
3) obtuse
4) acute
Click here to see answer by ewatrrr(24785)

Question 389741: if the lengths of two sides of a triangle are 4 and 7, the length of the third side cannot be
Click here to see answer by ewatrrr(24785)

Question 389777: an isoseles triangle has a perimeter of 50in. the congrtuent sides measure (2x=3)cm. the length of the third side is 4x cm. what is the valu of x?
Click here to see answer by user_dude2008(1862)

Question 389800: The sine ratio of any acute angle is equal to the cosine ratio of its complement ? true or false
Click here to see answer by stanbon(75887)

Question 389798: which equation is true ?
A) sin 30 degrees=sin 60 degrees
B) sin 45 degrees = cos 45 degrees
c) tan 45 degrees = cos 45 degrees
D) sin 90 degrees = tan 60 degrees
Click here to see answer by Alan3354(69443)

Question 389794: an urn contains 3 red marbles and 1 green marbles. if 2 marbles are selected at random without replacement. what is the probability that they are both green?
Click here to see answer by stanbon(75887)

Question 389801: in right triangle abc, side bc = 9 and side ac = 7.find the m angle a to the nearest degree?
Click here to see answer by Alan3354(69443)

Question 389797: if a 20 foot ladder reaches 18 feet up a wall, what angle does the ladder make with the ground, to the nearest degree?
Click here to see answer by mananth(16946)

Question 389818: the length of the sides of a triangle are y, y+1, and 7 centimeters. If the perimeter is 56 centimeters, what is the value of y?
Click here to see answer by rfer(16322)

Question 389796: in triangle abc, ab = 5 and ac=4. what is the measure of angle a to the nearest degree?
Click here to see answer by richard1234(7193)

Question 387759: given 3 points in a plane such that point of intersection form a triangle with sides of lenth 20cm,20cm,29cm.what will be the number of points equidistant from the three lines?
Click here to see answer by Alan3354(69443)

Question 389892: it possible to have a triangle whose lengths are 2 m, 6 m, and 11 m?
Click here to see answer by Alan3354(69443)

Question 390160: if 2 sides of a triangle measure 8 and 15 find all possible lengths of the third side in interval or inequality form?
Click here to see answer by ewatrrr(24785)

Question 390578: can a triangle have lenths of 17,19, and 35?
Click here to see answer by stanbon(75887)

Question 390578: can a triangle have lenths of 17,19, and 35?
Click here to see answer by ewatrrr(24785)

Question 390570: PLEASE PLEASE HELP!.... find the value of x,y, and z reduced to simplest radical form.
. i have tryed this problem so many times i just cant seem to get it!

heres a PICTURE
http://i1189.photobucket.com/albums/z426/cwallace2/Casey.jpg
Click here to see answer by Alan3354(69443)

Question 390757: in an isosceles triangle,legs measures 10 cm. when the base is 20 cm.,what are the degrees of the angles?
Click here to see answer by richard1234(7193)

Question 391153: in equilateral triangle one angle measures 3x+y the other 2x+40 and the third 2y. what is x and what is y
Click here to see answer by mananth(16946)

Question 391153: in equilateral triangle one angle measures 3x+y the other 2x+40 and the third 2y. what is x and what is y
Click here to see answer by tech9(1)

Question 391153: in equilateral triangle one angle measures 3x+y the other 2x+40 and the third 2y. what is x and what is y
Click here to see answer by richard1234(7193)

Question 391156: in equilateral triangle one angle measures 3x+y the other 2x+40 and the third 2y what is the value of x and what is the value of y
Click here to see answer by robertb(5830)

Question 391235: justneed to check my answer to this problem...once again working with sin, cos, and tan in the math solver.
the question: the leaning tower of piza is 179 feet high, making a 5.1 degree angle with the vertical. find the distance from the base of the tower to the vertical. round your solution to the nearest foot.
i got: 178.3 feet by putting cos(5.1)-(x/179) into the math solver
*we have to put the calculator into degree mode in my class
please help as soon as possible!!

Click here to see answer by stanbon(75887)

Question 389893: The vertices of ABC are A(-8, 0), B(0, 0), and C(0, -4). If a circle is circumscribed around ABC, where would the center of the circle be located?
Click here to see answer by robertb(5830)

Question 391599: The measures of the angles in a triangle are in the extended ratio of 2:15:19. Find the measures of the angles.

Click here to see answer by Alan3354(69443)

Question 391653: A stick 2 m long is placed vertically at point B. The top of the stick is line with the top of a tree as seen from point A, which is 3 m from the stick and 30 m from the tree. How tall is the tree?
Click here to see answer by ankor@dixie-net.com(22740)

Question 391689: A triangle has legs of 12 inches long, what is it's hypotenuse? (please simplify the radical)
Click here to see answer by richard1234(7193)

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