Question

if the sum of two angle measures 90, then they are complementary..?? what is that mean..please i ned :)

Answer 1

The definition of complementary angles is that they are two angles whose measures sum to 90. Complementary is just a name to refer to a pair of angles with that property.
Just like a right angle is defined as having a measure of 90. It's all just naming.
Do you have a specific problem to work that involves complementary angles? If so, post it.
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