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Math Words #1

Key Terms 1

Vocabulary WordDefinition
obtuse angle an angle whose measure is greater than 90 degrees and less than 180 degrees
acute angle an angle that has a measure less than 90 degrees
straight angle an angle that measures 180 degrees
chord a line segment with endpoints on a circle
degree a unit for measuring angles or for measuring temperature
diagonal slanting from one corner of a four sided figure, as a square, to another corner
scalene triangle a triangle with no congruent sides
isosceles triangle a triangle with exactly two congruent sides
equilateral triangle a triangle with three congruent sides
congruent having the same size and shape
similar having the same shape, but not necessarily the same size
parallel lines in a plane that do not intersect
perpendicular two lines that intersect to form right angles
circumference the distance around a circle
diameter a line segment that passes through the center of a circle and has its endpoints on the circle
radius a line segment with one endpoint at the center of a circle and the other endpoint on the circle
Created by: Central 5th Math
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