Question

Triangle ABC is a right triangle.

What is the relationship between angles A and B?
They are congruent.
They are complementary.
They are supplementary.
There is no relationship between them.
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Answer 1

Step-by-step explanation:they are compimentary

Answer 2

They are complementary.

Explanation:

we know that

The sum of the interior angles of a triangle must be equal to 180 degrees

so

A+B+C=180°

where

A,B and C are the measures of the interior angles of triangle

In a right triangle

The measure of angle C ( I assume that the right angle is C) is equal to 90 degrees

so

A+B+90°=180°

A+B=180°-90°

A+B=90°

Remember that

If two angles are complementary, then their sum is equal to 90 degrees

therefore

A and B are complementary angles