2007-08-22 14:13:18 · 3 answers · asked by xlhollisterboi 1 in Science & Mathematics ➔ Mathematics
As the base angles of an isoceles triangles are equal
4x-9=3x+2
=> 4x-3x=2+9
or,x=11
therefore,the base angles of the triangle is
4*11-9 or 35 degrees each
the vertex angle is ,therefore
180-2*35
=180-70
=110 degrees
2007-08-22 14:22:01 · answer #1 · answered by Anonymous · 0⤊ 0⤋
The base angles of an isosceles triangle are equal.
4x - 9 = 3x + 2
x = 11
3x + 2 = 3*11 + 2 = 33 + 2 = 35
The two base angles sum to
2*35 = 70
The angles of a triangle sum to 180°. So the vertex angle is:
180 - 70 = 110°
2007-08-22 14:21:14 · answer #2 · answered by Northstar 7 · 0⤊ 0⤋
Isosceles triangles have equivalent base angles hence 4x-9 = 3x + 2 4x- 3x = 2 + 9 x = 11 hence base attitude = 3x+ 2 = 33+2= 35 vertex attitude = one hundred eighty - 2* base attitude = one hundred eighty - 70= one hundred ten levels
2016-10-16 12:56:04 · answer #3 · answered by ? 4 · 0⤊ 0⤋