2007-03-12 04:43:55 · 4 answers · asked by noxmoreliesx 1 in Science & Mathematics ➔ Mathematics
well base angles in an isosceles triangle are always equal, so (4x-9)=(3x+2). The angles in a triangle always add up to 90 degrees, so the vertex angle will = 90- (4x-9) - (3x+2)
2007-03-12 04:48:46 · answer #1 · answered by 7Mathbaby 2 · 0⤊ 0⤋
Isosceles triangles have equivalent base angles subsequently 4x-9 = 3x + 2 4x- 3x = 2 + 9 x = 11 subsequently base attitude = 3x+ 2 = 33+2= 35 vertex attitude = a hundred and eighty - 2* base attitude = a hundred and eighty - 70= one hundred ten tiers
2016-10-18 04:45:43 · answer #2 · answered by tonini 4 · 0⤊ 0⤋
The base angles are equal, so
4x-9 = 3x+2
x = 11
3x+2 =3(11) +2 =35
Each base angle is 35 degrees so their sum is 70 degrees.
Therefor evertex angle = 180 - 70 = 110 degrees.
2007-03-12 04:51:32 · answer #3 · answered by ironduke8159 7 · 0⤊ 0⤋
since base anglse must be equal
4x-9=3x+2 subtract 3x from each side
x-9=2 add 9 to each side
x=11
4x-9=4*11-9=44-9=35°
so each base angla is 35°. the vertex angle is
180°-2*35°=110°
2007-03-12 05:25:50 · answer #4 · answered by yupchagee 7 · 0⤊ 0⤋