Questions on Geometry: Triangles answered by real tutors!

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Geometry: Triangles

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Question 96958: I would just like to verify this is correct. My answer only leaves 6 degrees for the last angle, which doesn't seem right.
Thanks!
The diagonal brace on a rectangular gate forms an angle with the horizontal side with degree x and an angle with the vertical side with degree measure 2x – 3. Find x.
x + (2x – 3) =180
3x – 3 = 180
3x = 177
x = 59
Answer: x = 59
Check : 1 angle is 59, 2nd angle is 115, which leaves 6 degrees for the third
Click here to see answer by stanbon(26297)

Question 96996: If cotA + cotB + cotC=sqrt3 then prove that the triangle is equilateral.
Click here to see answer by mathslover(126)

Question 97490: what is the slope of a line y=2/3x+1
Click here to see answer by edjones(3299)

Question 97730: A sphere has an area , what is its volume?
Click here to see answer by Edwin McCravy(2922)

Question 98096: Could someone please help me with this i forgot how you get the perimeter of a triangle.
Side 1 = 4
Side 2 = sqrt 5 - sqrt 3
Side 3 = sqrt 5 + sqrt 3
Click here to see answer by stanbon(26297)

Question 98133: Please help me solve this word problem.
The hypotenuse of a given right triangle is 6 cm longer than the
shorter leg. The length of the shorter leg is 2 cm less than that of the longer leg. Find the lengths of the three sides.
Thank you
Click here to see answer by edjones(3299)

Question 98335: Just a quick question.
I built a shelf. Its going to be 24" from the wall at a height of 38". How long do I make my braces from the front edge to the back at floor level?
Click here to see answer by bucky(1732)

Question 98670: An issocles triagle had a perimeter of 370mm.the base of the triangle is 40mm longer than the two equal side.What is the length of each side.
Click here to see answer by checkley71(8405)

Question 99215: Can someone please the time to help me solve this problem: In a right triangle, the length of the hypotenuse is 5 and the length of one of the legs is 3, determine the tangants of all three sides. I would be really appreciate it if you did help me.
Thank you

Click here to see answer by stanbon(26297)

Question 99286: Chief SOHCAHTOA decided his cone-shaped teepee needed to be 7 feet tall. He wanted his teepee to have a diameter of 12 feet. How long does he need to make the sides of his teepee.
Click here to see answer by stanbon(26297)

Question 99635: Could someone please show me how to get the altitude of a triangle? I cant seem to remember the formula to solve. Please help me.
Side A 13
Side B 13
Bottom 10

Click here to see answer by edjones(3299)

Question 99712: Hi my name is Tim and I have a question about graphing triangles.
14. The vertices of a right triangle are (-12, 8), (24, 8), and (24, -7). Find the length of the hypotenuse of the triangle (hypotenuse = side opposite the right angle).

Click here to see answer by edjones(3299)

Question 99722: how can i create a rectangle with two sides that each measure 2 centimeters, and whose area is exactly 13 cm2?
Click here to see answer by edjones(3299)

Question 81398: Height=h Base=h+7 Hypot=13 Find height and length
Click here to see answer by edjones(3299)

Question 99746: the angles of the triangle are abc. angle b is twice as angle a. angle c is 12 times as angle b. what are the measures of all angles?
angle abc = 180
Click here to see answer by edjones(3299)

Question 99922: one side of a triangle is a. the second side is 4 more than half of a and the third side is 7 less than twice a.
a. write an expression for the length of second side in terms of a.
b. write an expression for the length of the third side in terms of a.
c. find the perimeter if a = 3
Click here to see answer by checkley71(8405)

Question 99906: the base of a triangle is b. the height is 3 more than half the base.
a. find the area if the base is 10.
Click here to see answer by checkley71(8405)

Question 98932: Can somebody please help me solve this question: In a right triangle, the length of the hypotenuse is 5 and the length of one of the legs is 3, determine the tangents of all three angles. Could you also please show your work, I would really appreciate it.
Thank you very much
Click here to see answer by timmy1729(23)

Question 100608: the second angle of an architect's triangle is three times as large as the first. the third angle is 30 degress more than the first find the measure of each angle?
Click here to see answer by doukungfoo(195)

Question 102193: Each side of equilateral triangle ABC has a length of 8. AR is the altitude to BC. If point E is the midpoint of AR, find the length of BE.
Click here to see answer by edjones(3299)

Question 102316: The base of a triangle is one-third as long as its height. If the are of the triangle is 24 square meters, how long is its base?
Click here to see answer by Fombitz(2113)

Question 102421: a boy flying a kite lets out 400ft of string,whichs makes an angle of 56 with the ground. assumeing that the string is stretched taut,find to the nearest foot how high the kite is above the griund

Click here to see answer by oberobic(93)

Question 102369: The hypotonuse of a right triangle is 3m more than twice the short leg. The longer leg is 2 m more than twice the shorter leg. Find the lengths of the sides.
This is what I have so far, but am stuck.
x^2+(2x+2)^2=(2x+3)^2
x^2+4x^2+4x+4x+4 = 4x^2+6x+6x+9
x^2+4x^2+8x+4=4x^2+12x^2+9
now what??

Click here to see answer by edjones(3299)

Question 103133: In triangle CDE, CD=3y, DE=30, and CE=45. Determine the range possible values for y
I think the answer is 5 < y < 25
is this correct?
Click here to see answer by srinivas(5)

Question 103151: Given that two sides of a triangle are 20 and 66. Find the range of possible measures for the third side, s
I got 46 < s < 86
is this correct?
Click here to see answer by MathLover1(1183)

Question 103132: In triangle CDE, CD=3y, DE=30, and CE=45. Determine the range possible values for y
I think the answer is 5 is this correct?
Click here to see answer by MathLover1(1183)

Question 103131: In triangle CDE, CD=3y, DE=30, and CE=45. Determine the range possible values for y
I think the answer is 5 is this correct?
Click here to see answer by MathLover1(1183)

Question 103734This question is from textbook Geometry

: the meassure of one triangel is 28 more than the measure of the smallest angel of the triangle. the measure of the 3rd angel is twice the measure of the smallest angel. find all 3 measures.This question is from textbook Geometry

Click here to see answer by Earlsdon(4900)

Question 98171: what is the length of the 3rd side of a triangle with measures A=9 ft B=3ft what is the lenght of the hypotneuse/ third side? do you solve this w/ the A^2+B^2= C^2 formula?
Click here to see answer by edjones(3299)

Question 103785: In a triangle, the middle side is 7cm longer than the shortest side. The longest side is 8cm more than the shortest side. The perimeter is 31cm. What is the length of each side of the triangle? Must show work! thanks
Click here to see answer by scott8148(3385)

Question 104003: Could someone please help me with this problem. Find the length x. Express your answer in simplified radical form.
Side A= 51Ft
Side B = x
Bottom = 45Ft
Click here to see answer by jim_thompson5910(13794)

Question 104183: The perimeter of a triangle is 153 inches. The length of the longest side is 5/4 the length of the shortest side and the length of the other side is 10 inches more than the length of the shortest side. Find the length of each side.
Click here to see answer by scott8148(3385)

Question 104961: I am trying to make 9 triangles by adding 3 lines to the letter M. I have worked on it for hours even with the directions provided in your problem # 9107
I can not make it work. Can you show me in a picture? Thanks, Mark
Click here to see answer by kev82(145)

Question 104995: In a triangle, the measure of one angle is 60 degrees, the second angle is twice the measure of the third angle. Find the measures of the second and third angles.
Click here to see answer by checkley75(3666)

Question 105090This question is from textbook McDougal Littell Algebra 1
: Please list your answer as a step by step solution.
The back of the book lists the answer as 2.
How do I get an answer of 2?
Thanks!

Find the value of x for the triangle.
Perimeter = 24 feet
one side: (x + 4) ft
another side: 4 x ft
last side: 10 (x - 1) ft
This question is from textbook McDougal Littell Algebra 1

Click here to see answer by kmcruz09(38)

Question 100524: Find length x in each triangle. Express your answer in simplified radical form.
bottom of triangle is 12
longes side of the triangle is x
smallest side is 8
Click here to see answer by rahul(6)

Question 105661: The measure of one acute angle of an obtuse triangle is 10 degrees more than the measure of the other acute angle. The possible measures of the smaller acute angle are:
(1) > 40 degrees
(2) = 40 degrees
(3) < 40 degrees
(4) not determinable
SHOW WORK!
PLEASE HELP!!!!! (:
Click here to see answer by Fombitz(2113)

Question 105662: If the measure of one angle of a triangle is equal to the sum of the measures of the other two angles, then the triangle is always:
(1)acute
(2)obtuse
(3)isoceles
(4)right
EXPLAIN!
Click here to see answer by bucky(1732)

Question 106370: An equilateral triangle has the sides 5X-3, 6X-1, and 3X+2Y. Find the vaules of X and Y.
Click here to see answer by HyperBrain(694)

Question 106400This question is from textbook

: hi please help me i dont understand this problem
in equilateral triangle DEF, Measure of angle D = x+y
and measure of angle E = 2x-y
please answer thanks a lott
This question is from textbook

Click here to see answer by Earlsdon(4900)

Question 106401This question is from textbook

: hi please help me i dont understand this problem
in equilateral triangle DEF, Measure of angle D = x+y
and measure of angle E = 2x-y
find x and y
please answer thanks a lott
This question is from textbook

Click here to see answer by edjones(3299)

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