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Geometry
Term | Definition |
---|---|
2-D shape | A flat shape that has length and width |
polygon | A closed figure with 3 or more straight sides |
quadrilateral | A polygon with 4 sides |
rectangle | Quadrilateral with 4 right angles and 2 pairs of opposite equal parallel sides |
square | Quadrilateral that has 4 right angles and all sides are equal length |
trapezoid | Quadrilateral that has one pair of opposite sides that are parallel |
parallelogram | Quadrilateral with opposite sides that are parallel, equal in length and the opposite angles are equal |
side | the lines that connect to make a 2-D shape |
vertex/vertices | The point where 2 straight lines come together; a corner |
right angle | an angle that forms a square corner and measures 90 degrees |
parallel | 2 lines that never meet and are always the same distance apart |
triangle | a polygon with 3 straight sides and 3 angles |
rhombus | parallelogram with 4 equal sides and equal opposite angles |
pentagon | a polygon with 5 sides |
hexagon | a polygon with 6 sides |
octagon | a polygon with 8 sides |
plane | a flat surface |