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A triangle with three angles measuring less than 90 degrees. |
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In an isosceles triangle, it is the side opposite the vertex angle |
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Congruence transformation |
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When a geometric figure and its transformation image are congruent such as a slide , rotation or flip |
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Triangles that have their corresponding parts congruent |
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A statement that can be easily proven using a theorem. |
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Triangles with all three angles congruent |
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Triangles with all three sides congruent |
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An angle that forms a linear pair with one of the angles of a polygon |
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In a triangle, the side between two angles |
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A closed figure in a plane that is made up of segments that intersect only at their endpoints. |
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The name of the endpoints of a triangle. |
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A line of line segment added to a given figure to help in proving a result. |
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In an isosceles triengle, they are the angles opposite the congruent sides. |
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In a triangle, the angle formed by two sides |
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A triangle with at least two sides congruent |
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The two congruent sides of an isosceles triangle. |
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A triangle with one angle greater than 90 degrees |
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The angles of a triangle that are not adjacent to a given exterior angle |
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A triangle with one angle measuring exactly 90 degrees |
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A triangle with no two sides congruent |
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The name of the segments that form a triangle |
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A figure formed by the segment determined by three noncollinear points. |
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A figure formed by the segment determined by three noncollinear points. |
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Definition
In an isosceles triangle, the angle formed by the congruent sides |
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