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Glossary of Adam's Math flashcards

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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

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