1
two angles whose sum is 180 degrees.
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two angles.whose sum is 90 degrees.
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a device for measuring angles.
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angles formed on opposite sides of a transversal between parallel lines
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two angles that share both a side and a vertex.
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a unit of measure of an angle
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an angle whose measure is greater than 90 degrees.
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a positive angle measuring less than 90 degrees.
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angles greater than 180° but less than 360°
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an angle whose measure is 90 degrees.
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the union of two rays with a common endpoint, called the vertex.