Internal measure of a triangle is 180 degrees
base angles of an isosceles triangle are =
therefore each base angle is 4x
4x+4x+x=180
9x= 180
x=20
vertex angle= 20
Answer:
4
Step-by-step explanation:
you just multiply 8(m) by 1/2(n)
use a calculator it's way easier but here is the answer
Answer:
C) 40
Step-by-step explanation:
ABCD is an isosceles trapezoid
So <B = <C
x+10 = 2x - 30
-x = -40
x = 40