Angles
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vertex
a point where two lines meet
right angle
an angle that is exactly 90 degrees.
obtuse angle
an angle that is greater than 90 degrees and less than 180 degrees.
straight angle
an angle that measures exactly 180 degrees.
acute angle
angles that are greater than 0 degrees and less than 90 degrees
adjacent angles
angles that share a common side and vertex
complementary angles
2 Angles that add up to 90 degrees.
supplementary angles
2 angles that up to 180 degrees.
Degree
An angle is measured in these units.
vertical angles
Angles opposite each other that are equal