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Geometry
acute angle, circumference, etc.
| Clue | Term |
|---|---|
| an angle that is less than 90 degrees | acute angle |
| pairs of angles that share a vertex and have one common side | adjacent angles |
| the distance around a circle | circumference |
| two angles whose measures have a sum of 90 degrees | complementary angles |
| angles that have the same measure | congruent angles |
| a straight line passing from side to side through the center of a circle; cuts a circle in half | diameter |
| 3.14 or 22/7; the ratio of the circumference to the diameter | pi |
| a straight line from the center to the circumference of a circle | radius |
| a 90 degree angle; made up from two perpendicular lines | right angle |
| the sum of all interior angles of a triangle must total 180 degrees | sum of angles in a triangle |
| two angles whose measures have a sum of 180 degrees | supplementary angles |
| point where two or more lines meet; corner of an angle | vertex |
| a pair of opposite congruent angles formed by intersecting lines | vertical angles |