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Geometry 1 - 3 Measuring and Constructing Angles
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Vocabulary for 1 - 3 Measuring and Constructing Angles
Terms in this set (12)
Angles
A figure formed by two rays with a common endpoint.
Vertex
The common endpoint of an angle
Interior of an angle
The set of all points between the sides of an angle (inside)
Exterior of an Angle
The set of all points on the outside of the angle.
Measure
The number of degrees in an angle.
Degree
The unit of measure of an angle.
Acute Angle
An angle that measures greater than 0°but less than 90°.
Right Angle
An angle that measures 90°.
Obtuse Angle
An angle that measures greater than 90° but less than 180°.
Straight Angle
An angle formed by two opposite rays and has a measure of 180°.
Congruent Angles
Two angles with the same measure. This is shown by using the arc marks.
Angle Bisector
A ray that divides an angle into two congruent angles.
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