Question

If two angles of a triangle have equal measures and the third angle measures 90°, what are the angle measures of the triangle?

Answer 1

Answer:

D. $45^{o}$, $45^{o}$, $90^{o}$

Step-by-step explanation:

Angles of a triangle always add u to $180^{o}$. If one angle measures $90^{o}$, then the two remaining angles must add up to 180 - 90 = 90.

Since the two angles have equal measures, we can set up an equation:

2a = 90 (where a = angle of one equal measure)

a = 45.

Therefore, the angle measures of the triangle are $45^{o}$, $45^{o}$, $90^{o}$, or answer choice D.

Answer 2

the answer is D cuz 45+45=90 and 90+90=180