angles and triangles

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Last updated 6:15 PM on 8/28/26
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7 Terms

1
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Vertical Angles

The angles opposite each other when two lines cross. The angles are always congruent and equal to each other

2
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Linear Pair of Angles

A pair of two adjacent angles formed by two intersecting lines, or by a ray drawn from a point. The two angles add up to 180.

3
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Supplementary Angles

A pair of two angles that add up to 180

4
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Complementary Angles

A pair of two angles that add up to 90

5
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Scalene Triangle

Scaling triangles have no congruent sides to each other

6
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Equilateral Triangle

Have all equal or congruent size and angles

7
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Isosceles Triangle

Have at least one pair of congruent sides/angles, or all