Term
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Definition
| a triangle with at least two congruent sides |
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Term
| leg (of an isosceles triangle) |
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Definition
| one of the two congruent sides of an isosceles triangle |
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Term
| vertex angle (of an isosceles triangle) |
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Definition
| the angle formed by the two legs of an isosceles triangle, or the angle opposite the base of an isosceles triangle |
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Term
| base (of an isosceles triangle) |
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Definition
| the side opposite the vertex angle of an isosceles triangle |
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Term
| base angle (of an isosceles triangle |
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Definition
| an angle whose vertex is an endpoint of the base of an isosceles triangle, or an angle opposite one of the legs of an isosceles triangle |
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Term
| leg (of a right triangle) |
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Definition
| one of the sides of a right triangle that forms the right angle |
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Term
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Definition
| having the same size and shape |
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Term
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Definition
| a theorem that can be easily derived from another theorem |
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Term
| alternate interior angles |
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Definition
| two non-adjacent angles that lie in the interior of two lines cut by a transversal, but are on opposite sides of that transversal |
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Term
| same-side interior angles |
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Definition
| two angles that lie in the interior of two lines cut by a transversal and are on the same side of that transversal |
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