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18 Cards in this Set
 Front
 Back
Protractor

am instrument used to measure the size of an angle


Degree

a unit of measure for angles


acute angle

angle measuring less that 90*


right angle

angle measuring more that 90*


obtuse angle

measures greater than 90* and less than 180*


straight angle

measures 180*


polygon

a plane closed figure formed by a line segment


line segment

a part of a line that has two points


equallateral triangle

a triangle with all sides the same length


isoceles triangle

a triangle with two side the same length


right triangle

triangle with one right angle


obtuse triangle

triangle with one angle greater that 90*


quadrilateral

a polygon with four sides


square

polygon with four equal sides


rectangle

opposite sides are parallel and the same length and had four right angles


parallelagram

two pairs of parellel sides


rhombus

two pairs of parallel sides
all sides are the same length 

trapezoid

only one pair of parallel sides
