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Geometry Test Review
| Question | Answer |
|---|---|
| two angles whose sum= 180° | supplementary angles |
| two angles whose sum= 90° | complementary angles |
| 2 angles formed by intersection, opposite and - to each other | vertical |
| 2 angles that share a vertex and a side | adjacent |
| one angle that is less than 90° | acute |
| one angle that is more than 90° | obtuse |
| one angle that is 90° | right |
| lines intersecting to form 90° | perpendicular lines |
| 4 sides, for angles = 360° | quadrilaterals |
| opposite sides parallel and equal | parallelogram |
| all 4 sides equal and opposite sides parallel | rhombus |
| on set of parallel sides (bases) others not | trapezoid |
| opposite sides parallel and equal, 90° angles | rectangle |
| all 4 sides equal, opposite sides parallel, 90° angles | square |
| 5 sided | pentagon |
| 6 sided | hexagon |
| 7 sided | heptagon |
| 8 sided | octagon |
| 9 sided | nonagon |
| 10 sided | decagon |
| more than 10 sides | n sides ---> n-gon |