Congruent Triangles

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10 Terms

1
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Acute triangle

three acute angles, all three angles measure less than 90°.

<p>three acute angles, all three angles measure less than 90°.</p>
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auxiliary line

a line added to a diagram to help solve a problem or prove a geometric concept

<p>a line added to a diagram to help solve a problem or prove a geometric concept</p>
3
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base angles

an angle in a polygon, most commonly a triangle, that is formed at the end of the base side. In an isosceles triangle, the two angles opposite the congruent sides (legs) are equal and are both called base angles

<p>an angle in a polygon, most commonly a triangle, that is formed at the end of the base side. In an isosceles triangle, the two angles opposite the congruent sides (legs) are equal and are both called base angles</p>
4
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congruence transformation

a geometric movement that preserves the size, shape, and angles of an object, resulting in a congruent image.

<p>a geometric movement that preserves the size, shape, and angles of an object, resulting in a congruent image.</p>
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congruent polygons

polygons with the exact same shape and size

<p>polygons with the exact same shape and size</p>
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coordinate proof

uses the coordinate plane to prove geometric statements by algebraic formulas, (distance formula and slope formula) to the coordinates of the figure's vertices

<p>uses the coordinate plane to prove geometric statements by algebraic formulas, (distance formula and slope formula) to the coordinates of the figure's vertices</p>
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corollary

a statement that is a direct and easy-to-prove consequence of a previously proven theorem

<p>a statement that is a direct and easy-to-prove consequence of a previously proven theorem</p>
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corresponding parts

the matching points, sides, or angles in two figures that are in the same relative position to each other

<p>the matching points, sides, or angles in two figures that are in the same relative position to each other</p>
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flow proof

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remote interior angles

the two interior angles of a triangle that are not adjacent to a specific exterior angle

<p>the two interior angles of a triangle that are not adjacent to a specific exterior angle</p>