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Definition
| A triangle each of whose angles measures less than 90 degrees. |
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| A triangle that contains a right angle. |
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| A triangle with an obtuse angle. |
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| A triangle that has three equal angles. |
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Definition
| A triangle with three unequal sides. |
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| The point of intersection of a triangle's medians. |
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Definition
| A statement that follows readily after a previous statement (usually after a theorem). |
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Definition
| A triangle with at least two equal sides. |
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Definition
| A triangle that has three equal sides. |
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| special segments of a triangle |
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Definition
| Include perpendicular bisector, segment connecting midpoints of a triangle, median, and altitude. |
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Definition
| A line which cuts a line segment into two equal parts at 90°. |
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Definition
| A line segment joining the midpoints of two sides of a triangle. |
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Definition
| A line joining a vertex to the midpoint of the opposite side. |
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Definition
| The perpendicular distance from one side (its base) to the opposite vertex. a.k.a. "height" of the triangle. |
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Definition
| A line which cuts an angle into two equal halves. |
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