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AB is perpendicular to CD . How many 90° angles are formed by the intersection?
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AB is perpendicular to CD . How many 90° angles are formed by the intersection?
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Sep 2, 2017
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AB is perpendicular to CD . How many 90° angles are formed by the intersection?
Mathematics
high-school
TomL
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Perpendicular lines make a cross. There are 4 right angles.
Gary Holland
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Sep 7, 2017
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Gary Holland
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