Questions on Geometry: Triangles answered by real tutors!

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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 richard1234(5390)

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(1861)

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(57290)

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(30993)

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(57290)

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(30993)

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(12270)

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(12657)

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(5390)

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(30993)

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(30993)

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(10682)

Question 390578: can a triangle have lenths of 17,19, and 35?
Click here to see answer by stanbon(57290)

Question 390578: can a triangle have lenths of 17,19, and 35?
Click here to see answer by ewatrrr(10682)

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(30993)

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(5390)

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(12270)

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(5390)

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(4012)

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(57290)

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(4012)

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(30993)

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(15647)

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(5390)

Question 391786: Hello,
We are learning Inequalities Involving Two Triangles (SAS Inequalities i.e. Hinge Theorem & SSS Inequality) and I have a problem I can not solve. Using the figure, write an inequality relating the given pair of angle or segment measures. FH,GE
the book says that FH > GE but I am not sure how to prove that. can anyone help?

Click here to see answer by NancyLam(35)

Question 391944: I have to find the area of a triangle with a base of 3 3/8in. and a height of 2 2/3 in.

Click here to see answer by Alan3354(30993)

Question 391508: |7x|>-6
Click here to see answer by robertb(4012)

Question 392277: This question also has some algebra in it. I have 1 scalene triangle with the base of x2-7x+13 and the two sides are x2-6x+4 how do i find the perimeter
Click here to see answer by ewatrrr(10682)

Question 392278: Two sides of a triangle have lengths 2 and 5. Find all possible integral values that could represent the length of the third side.
Click here to see answer by ewatrrr(10682)

Question 392317: each base angle of an isosceles triangle has a measure of 30 degrees. If the length of the base is 36,what is the height of the triangle?
Click here to see answer by NancyLam(35)

Question 392382: Find the measures of the angles of each triangle:
The ratio of the measures of 3 angles is 2:5:3
Click here to see answer by Alan3354(30993)

Question 392404: I still don't get this!
Find the measures of the sides of each triangle:
The ratio of the measures of 3 sides of a triangle is 8:7:5. Its perimeter is 240 ft.
Can someone help me??
Thanks
Click here to see answer by Alan3354(30993)

Question 392475: A garden has the shape of an isosceles right triangle. the length of the hypotenuse is 24 feet. what is the area of the garden? I need help!!
Click here to see answer by rfer(12657)

Question 392507: a corner table has a top in the shape of an isosceles right triangle. if the hypotenuse is 14 inches long what is the length of each side?
Click here to see answer by mananth(12270)

Question 392699: the base of an isosceles traingle has legth 10. what can you say about the leght of the legs?
Click here to see answer by ewatrrr(10682)

Question 392772: if the side lengths of a triangle are 4,15, and 25. is the triangle acute, obtuse, or right. or can it not be formed?
Click here to see answer by Alan3354(30993)

Question 392773: a triangle with an angle whose measure is 90 degrees is called ?
Click here to see answer by stanbon(57290)

Question 392774: if the side lengths of a triangle are 8, 9, and 10 would it be obtuse, acute, or right. or can it not be formed? if so why?
Click here to see answer by Alan3354(30993)

Question 392914: Find the perimeter of triangle KLM.
Click here to see answer by mananth(12270)

Question 392969: The area A of a triangle with base b and height h is given by A= 1/2bh. Find the area when b=19 and h=12m.
Click here to see answer by richard1234(5390)

Question 393023: Write a polynomial that represents the area of each triangle
Width is 2x+3 and length is 4x
Click here to see answer by stanbon(57290)

Question 393027: Verify that the points (0,0), (a,0), and (a/2, square root3a/2) are the vertices of an equilateral triangle.
Click here to see answer by robertb(4012)

Question 393067: Pleae help me solve this problem.

A right triangle has a height of x, a base of 5 and a hypotenuse of 13. Solve for x.

Click here to see answer by mananth(12270)

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