Question

A right angle intersects a line at point M. Which statement is true about angles 1 and 2? They are congruent. They are right angles. They are complementary. They are supplementary.

Answer 1

They are congruent
they are right angles
they are supplementary

the above written statements are true

Answer 2

Thank you for asking this question, please look at the attached image to understand this question better.

If you look at the yellow square you will see it is a square of 90°.

Together with angles 1 and 2, they form a straight angle so we have:

∠1+∠2+90°=180°, 

subtracting 90° from both sides we have:

∠1+∠2=90°

If the sum of the measures of 2 angles is 90°, the angles are called complementary.

The sum of the measures of angles 1 and 2 is 90°,

Then these 2 angles are complementary.

So, they are complementary

If there is any confusion please leave a comment below.