Question

For two adjacent angles with measures x degree and (x+30) degree that makes up a 90 degree angle, what is x?

A. 20

D. 30

Answer 1

In a 90 degree angle, the two angles are complementary, which means they add up to 90 degrees.

So x + (x+30) = 90.

Combining like terms, we get 2x + 30 = 90.

Subtracting 30 from both sides, we get 2x = 60.

Dividing both sides by 2, we get x = 30.

Therefore, x is 30 degrees.

So the answer is D. 30.