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27 Cards in this Set
 Front
 Back
Angle

2 rays joined at a common point.


Reflex Angle

Any angle between 180360 degrees.


Parallelogram

A quadrilateral with opposite sides that are parallel and of equal length and opposite and opposite angles that are equal.


Rectangle

A quadrilateral with 4 right angles and 2 pairs of equal parallel lines.


Acute Triangle

A triangle whose angles are between 0  90 degrees.


Square

A quadilateral sides with 4 equal sides and 4 right angles. 

Isoceles Triangle

A triangle with 2 equal sides and 2 equal angles.


Straight Angle

An Angle measuring 180 degrees.


Quadrilateral

Polygon with 4 sides.


Scalene Triangle

A triangle in which all 3 sides are a different length.


Obtuse Triangle

A triangle with 1 angle being between 90180 degrees.


Right Triangle

A triangle that has a right angle (90 degrees).


Degree

A unit of measure to measure angles.


Right Angle

An angle measuring 90 degrees.


Protractor

A tool to measure angles.


Polygon

A plane shape having 3 or more sides.


Triangle

A polygon with 3 sides and 3 angles.


Parallel

Lines that are the same distance apart.


Congruent

Figures that have the same size and shape.


Perpendicular lines

Lines that intersect at right angles.


Compass

A tool to make circles


Obtuse Angle

An angle measuring between 90180 degrees.


Line

A long thin continuous mark that goes in both directions.


Line Segment

A section of a line bounded by 2 endpoints.


Ray

A line that has a starting point but no ending.


Acute Angle

An angle measuring less than 90 degrees.


Point

A position in space. A very small location.
