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plane shapes
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2-D Shapes
| Term | Definition |
|---|---|
| plane shapes | a flat shape that can be measured in 2 dimensions, length and width. |
| attributes | Properties of plane shapes that can be used to sort the shapes into categories. *number of sides *length of sides *parallel lines *angles |
| Right angle | An angle measure equal to 90° (Noted on geometric figures by a box in the corner that is 90°) |
| Parallel lines | Two lines that are always an equal distance apart |
| Perpendicular lines | Two lines that intersect at a 90° angle |
| categories | a label for shapes that have the same attributes |
| Polygon | a closed plane figure made of 3 or more line segments, called sides, that have endpoints that intersect to form vertices |
| quadrilateral | a polygon with 4 sides |
| trapezoid | a quadrilateral with at least 1 pair of parallel sides |
| parallelogram | a quadrilateral with 2 pairs of parallel sides |
| rhombus | a parallelogram with four sides of equal length |
| rectangle | a parallelogram with 4 right angles |
| square | a rhombus that is also a rectangle with 4 sides of equal length and 4 right angles |
| line of symmetry | a line across a figure such that the figure can be folded along the line into matching parts |
Created by:
esmith5295
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