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Chapter 18- Plane Figures
20 flat shapes
20
Mathematics
4th Grade
02/27/2013

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Cards

Term
Polygon
Definition
A closed figure with straight sides
Term
Triangle
Definition
A polygon with three sides
Term
Quadrilateral
Definition
A polygon that has four sides
Term
Square
Definition
A quadrilateral with four equal sides and for right angles
Term
Rectangle
Definition
A quadrilateral with opposite sides that are equal, and four right angles
Term
Pentagon
Definition
A polygon with five sides
Term
Hexagon
Definition
A polygon with six sides
Term
Octagon
Definition
A polygon with eight sides
Term
Regular Polygon
Definition
A polygon in which all sides have the same length and all angles have equal measure
Term
Equilateral Triangle
Definition
A triangle with three equal sides
Term
Isosceles Triangle
Definition
A triangle with two equal sides
Term
Scalene Triangle
Definition
A triangle with no equal sides
Term
Trapezoid
Definition
A quadrilateral with exactly one pair of parallel sides
Term
Venn Diagram
Definition
A diagram that shows relationships among set of things
Term
Circle
Definition
A closed plane figure made up of points that are the same distance from the center
Term
Center
Definition
The point inside a circle that is the same distance from each point on the circle
Term
Chord
Definition
A line segment that has its endpoints on the circle
Term
Diameter
Definition
A chord that paces through the center of the circle
Term
Radius
Definition
A line segment with one endpoint at the center of the circle and the other endpoint on the circle
Term
Compass
Definition
A tool used to construct circles
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