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14 Cards in this Set
- Front
- Back
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triangle
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a figure bounded by three straight lines
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base of a triangle
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the side upon which a triangle is supposed to stand
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exterior angle of a triangle
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an angle formed by one side of a triangle and the adjacent side extended through the vertex
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Informal Statement 1: The sum of the three angles of a triangle is equal to...
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...one straight angle.
(Informal Statement 1) |
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scalene triangle
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a triangle with no two sides equal
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isosceles triangle
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a triangle with two equal sides
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equilateral triangle
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a triangle with three equal sides
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acute triangle
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a triangle with only acute angles
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obtuse triangle
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a triangle with one obtuse angle
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right triangle
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a triangle with one right angle
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hypotenuse
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the side opposite the right angle of a right triangle
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leg of a triangle
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either of the sides of a right triangle that is not the hypotenuse
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equiangular triangle
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a triangle whose angles are all equal
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interior angles of a triangle
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the angles on the inside of the triangle
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