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| angles that share a common side and have the same origin. |
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| angles that share a common origin and are opposite each other. |
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| two angles whose measure adds up to 180 degrees. |
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| two angles whose measures add up to 90 degrees. |
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| a straight line that intersects two parallel lines. |
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| angles in the inside of the parallel lines. |
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| angles on the outside of the parallel lines. |
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| alternate interior angles |
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| on opposite sides of the transversal (interior) |
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| alternate exterior angles |
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Definition
| on opposite sides of the transversal (exterior) |
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| measure of a distance around a shape |
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| a quadrilateral with four right angles |
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| quadrilateral with two pairs of parallel lines. |
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Definition
| quadrilateral with four congruent sides. |
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| quadrilateral with only one pair of parallel sides. |
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Definition
| quadrilateral with four congruent sides and four right angles. |
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Term
| interior angles (rectangle) |
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Definition
| sum of the interior angles adds up to 360 degrees. |
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Term
| interior angles (triangle) |
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Definition
| sum of the interior angles adds up to 180 degrees. |
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Definition
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Term
| area of parallelogram or rhombus |
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Definition
| base times height - height is always perpendicular to base. |
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Term
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Definition
| base times height divided by 1/2 |
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| (base one plus base two divided by 2)times height. |
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| all angles greater than 0 and less than 90 degrees |
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Definition
| on angle greater than 90 degrees |
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Definition
| one angle equal to 90 degrees |
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Definition
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Definition
| a polygon with all sides congruent and all angles congruent. |
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Definition
| (sides-2) times 180 degrees. |
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| individual degrees in polygon |
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Definition
| total degrees divided by number of sides. |
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Term
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Definition
interior angles and exterior angles are complementary = 180 degrees.
total exterior angles equal 360 degrees. |
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