Answer:
right angles.B
Step-by-step explanation:
let x and ybe angles.
x+y=180
also x=y
x+x=180
2x=180
x=180/2=90
y=x=90
Answer:
right angles
Step-by-step explanation:
Let x be the angle
X is also the other angle since they are equal
Supplementary means they add to 180
x+x = 180
2x = 180
Divide by 2
2x/2 = 180/2
x= 90
They are right angles
