Term
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Definition
| a triangle with three acute angles |
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Term
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Definition
| these angles share a vertex and a side but have no interior points in common |
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Term
| alternate interior angles |
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Definition
| these angles lie within a pair of lines and on opposite sides of a transversal |
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Term
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Definition
| this is a ray that divides an angle into angles of equal measure |
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Term
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Definition
| the number of square units a figure encloses. |
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Term
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Definition
| two angles are this if the sum of their measures is 90° |
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Term
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Definition
| two polygons are this if they have exactly the same shape and size |
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Term
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Definition
| these angles lie on the same side of the transversal and in corresponding position |
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Term
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Definition
| a triangle with three congruent sides |
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Term
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Definition
| a triangle with at least two congruent sides |
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Term
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Definition
| a triangle with one obtuse angle |
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Term
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Definition
| a quadrilateral with both pairs of opposite sides parallel |
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Term
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Definition
| lines that intersect to form right angles |
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Term
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Definition
| a polygon with four sides |
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Term
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Definition
| a parallelogram with four right angles |
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Term
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Definition
| a polygon with all sides congruent and all angles congruent |
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Term
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Definition
| a parallelogram with four congruent sides |
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Term
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Definition
| a triangle with one right angle |
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Term
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Definition
| a triangle with no congruent sides |
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Term
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Definition
| a parallelogram with four right angles and four congruent sides |
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Term
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Definition
| two angles whose measures add to 180° |
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Term
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Definition
| a line that intersects two or more lines at different points |
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Term
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Definition
| a quadrilateral with exactly one pair of parallel sides |
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Term
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Definition
| these angles are formed by two intersecting lines and are opposite each other |
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