Answer:
Step-by-step explanation:
if vertical angles (formed when two lines cross each other) or congruent angles (equal degree measure total)
8x-10=3x+90
5x=100
x=20
if complementary (together equal 90 degrees)
8x-10+3x+90=90
11x+80=90
11x=10
x=(10/11)
which in decimal form is about 0.90
if supplementary (together equal 180 degrees)
8x-10+3x+90=180
11x+80=180
11x=100
x=(100/11)
which in decimal form is about 9.09
