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Angles by Mind Map: Angles
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Angles

Adjacent Angles

share same ray

Semicircle

180 degrees

supplementary

Right Angle

2 rays are perpendicular

complementary

90 degrees

2 line segments

all angles are supplementary and adjacent

only 2 adjacent/ supplementary angles equal 180 degrees

vertical angles

Measuring

one side on 0 degrees line

other line determines angle measurement

vertex is at the center of the protractor