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.

Based on the provided information, statement that is true about angles 1 and 2 is that they are complementary.
complementary angle can be explained as two angles are that has their measures adding to 90 degrees.
We can see that coloured portion is 90°, and addition of ∠1 and ∠2= 90° since they are on straight line.
Therefore, option C is correct.
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