Skip to content
Library
Solve
Practice
Search 7,000+ topics
/
Color theme
Dark
Light
Sign in
Library
Solve
Practice
Search everything
About Expii
Contributors
Topic directory
Math
Geometry
Glossary for Geometry
Glossary of Angle Types
What Are Complementary Angles?
Read this topic
Explanations
1
Complementary angles add up to 90∘90^\circ90∘ When two angles' measures add up to 90∘90^\circ90∘, the angles are called complementary (to each other). Since angles have to measu…
By Zora Gilbert, Victor Wang
Find a topic
Type a concept, like “slope” or “photosynthesis”.
↑ ↓ to choose · Enter to open
Search explanations and problems