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Math
Geometry
Geometry Vocab: Circles and etc.
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Gravity
VASOL5.9; Identify and describe the diameter, radius, chord & circumference of a circle.
Terms in this set (14)
parallel lines
two lines that will never intersect
line segment
part of a line having two endpoints
diameter
a line segment that passes ACROSS the circle and through the center
radius
Connects the center of a circle to a point on a circle. (1/2 the length of the diameter).
protractor
a tool used to draw & measure the size of an angle
degree
a unit of measure for angles
right angle
an angle whose measure is 90 degrees
straight angle
an angle whose measure is 180 degrees
obtuse angle
an angle whose measure is between 90 and 180 degrees
acute angle
an angle whose measure is less than 90 degrees
circumference
the distance around a circle (like perimeter)
pi
an irrational number, starting with 3.14159...
chord
A segment whose endpoints lie on a circle (but might NOT go through the center)
perpendicular lines
Two lines that intersect to form right angles
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