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Module 8 Vocabulary

Ms. Strong/Beagle Middle School/Geometry Vocabulary

TermDefinition
Vertical Angles A pair of opposite angles formed by the intersection of two lines. They are congruent
Right Angle An angle measuring exactly 90°.
Supplementary Angles Two angles whose measures sum to 180°
Vertex The point where two or more lines, line segments, or rays meet.
Complementary Angles Two angles whose measures sum to 90°
Obtuse Angle An angle that measures between 90° and 180°
Acute Angle An angle that measures between 0° and 90°
Straight Angle An angle that measures exactly 180°
Adjacent Angles Two angles that share a vertex and a ray
Acute Triangle A triangle that has three acute angles
Right Triangle A triangle that has one right angle
Obtuse Triangle A triangle with one obtuse angle
Equilateral Triangle A triangle with three equal side lengths
Scalene Triangle A triangle with no equal side lengths
Isosceles Triangle A triangle with two equal side lengths
Degrees in a Triangle: 180°
Created by: user-2038524
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