Geometric shape formed by two rays (initial and ending sides of the angle) that share a common endpoint called the vertex. You may name an angle using the vertex, or a point in each ray and the vertex label in the center.
An angle that is between 0 and 90 degrees.
Angle that together with the given angle adds up to 90 degrees.
Two angles whose measures, when added together, equal 90 degrees.
An angle whose measure is greater than 90 but less than 180 degrees.
Angle that together with the given angle adds up to 180 degrees.
Two angles whose measures, when added together, equal 180 degrees.
Nonadjacent angles that are opposite by the vertex and are formed by two intersecting straight lines.
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