Term
| An equilateral triangle is isosceles. |
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Definition
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Term
| An angle has a complement |
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Definition
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Term
| an angle is equal to its supplement |
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Term
| a right triangle is isosceles |
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Term
| the complement of an acute angle is an obtuse angle |
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Term
| two lines perpendicular to a third line are skew |
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Definition
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Term
| two skew lines are coplanar |
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Definition
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Term
| if two angles have a common side, the angles are adjacent |
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Definition
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Term
| the supplement of an obtuse angle is an obtuse angle |
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Definition
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Term
| complementary angles are congruent to each other. |
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Term
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Definition
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Term
| supplementary angles are adjacent. |
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Term
| congruent angles are supplementary |
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Term
| three parallel lines are coplanar |
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Term
| if the diagonals of a quadrilateral are perpendicular, the the quad is a rhombus. |
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Definition
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Term
| the diagonals of a rectangle bisect each other |
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Definition
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Term
| a trapezoid with three congruent sides is isosceles |
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Definition
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