Complementary angles
Complementary angles add up to a right angle. Include the degree sign if you like.
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Two angles make a right angle together (they are complementary). One measures 64°. What does the other measure?
Answer: 26°
Angle A and angle B are complementary. One measures 20°. What does the other measure?
Answer: 70°
Two angles are complementary. One measures 66°. What does the other measure?
Answer: 24°
Tip: Complementary angles add up to a right angle. Include the degree sign if you like.
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- Next in this topic Supplementary angles Class 4
Curriculum
Common Core: 4.MD.C.7
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On paper: this skill is in the printable pack Grade 4 Common Core Math: Geometry and Measurement, with an answer key.
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