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IGHS Winkels
Geometry Chapter 2 Vocabulary
| Term | Definition |
|---|---|
| angle | a geometric figure formed by two rays with a common endpoint |
| protractor | a tool used to measure angles |
| acute angle | an angle that is greater than 0 and less than 90 |
| right angle | an angle that is equal to 90 |
| obtuse angle | an angle that is greater than 90 and less than 180 |
| straight angle | an angle that is equal to 180 |
| adjacent angles | two angles that have a common vertex and a common ray |
| complementary angles | a pair of angles whose measures have a sum of 90 |
| supplementary angles | a pair of angles whose measures have a sum of 180 |
| congruent angles | angles that have the same measure |
| vertical angles | angles formed by intersecting lines |
| angle bisector | a ray that divides an angle into two congruent angles |