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Geometry Vocabulary
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Gravity
Key Concepts:
Terms in this set (13)
Line
Straight, one dimensional, and extend infinitely in each direction
Parallel Lines
lines in the same plane that never intersect
Perpendicular Lines
Lines that intersect to form right angles
Ray
a part of a line that starts at an endpoint and extends forever in one direction
Angle
A figure formed by two rays with a common endpoint
acute angle
an angle that measures less than 90 degrees
obtuse angle
An angle that measures more than 90 degrees but less than 180 degrees
right angle
an angle that measures 90 degrees
complementary angles
Two angles whose sum is 90 degrees
supplementary angles
Two angles whose sum is 180 degrees
Radius
The distance from the center of a circle to any point on the circle
Diameter
the distance across a circle through its center
Circumference
The distance around a circle
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