Angles
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Ray | A ray is a part of a line that begins at a particular point (called the endpoint) and extends endlessly in one direction.
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| Angle | An Angle is the figure formed when two rays meet at a common endpoint.
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| Central Angle | A Central Angle is an angle with its vertex at the center of a circle.
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| Right Angle | A Right Angle is an angle that has a measure of 90 degrees.
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| Straight Angle | A Straight Angle is an angle that has a measure of 180 degrees.
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| Acute Angle | An Acute Angle is an angle that that has a measure of more than 0 degrees but less than 90 degrees.
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| Obtuse Angle | An Obtuse Angle is an angle that that has a measure of more than 90 degrees but less than 180 degrees.
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| Complementary Angles | Two Angles are Complementary if their measures add up to 90 degrees (a Right Angle).
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| Supplementary Angles | Two Angles are Supplementary if their measures add up to 180 degrees (a Straight Angle).
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| Congruent Angles | Two angles are Congruent if their measures are equal.
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| Vertical Angles | Two angles are Vertical if they are formed by intersecting lines and are opposite each other.
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| Parallel Lines | Parallel lines are two lines on a plane that never intersect and have the same slope.
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| Transversal | A transversal is a line that crosses at least two other lines.
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| Corresponding Angles | When two lines are intersected by a transversal, the angles that match from one group to the other are called corresponding angles.
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| Alternate Interior Angles | When two lines are intersected by a transversal, the pairs of angles on opposite sides of the transversal but inside the two parallel lines are called Alternate Interior Angles.
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| Alternate Exterior Angles | When two lines are intersected by a transversal, the pairs of angles on opposite sides of the transversal but outside the two parallel lines are called Alternate Interior Angles.
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Created by:
esisolak
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