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15 Cards in this Set
 Front
 Back
The distance around a figure

Perimeter


A measure of how much surface is covered by a figure. Area is measure in square units.

Area


Length x Width

Area of Squares/Rectangles


1/2 Base x Height

Area of Triangles


Pi x radius squared

Area of Circle


The distance around the outside of a circle.

Circumference


A line segment passing through the center fo a circle from one sid to the other.

Diameter


A line segment from the center fo the circle to the edge of the circle.

Radius


The radius of cirucmference of a circle to its diameter. Pi= 3.14

Pi


Figures that have the same shape but are different sizes.

Similar figures


Figures that have the same size and shape.

Congruent figures


Is how many times the smaller figures line segments
go into the bigger bigger figures line segments. 
Scale factor


Two triangles that are similar if the measurement of the three angles in both triangles are the same.

Similar Triangles


In similar triangles corresponding sides have the same ratio.

Correspondidng Sides


The corresponding sides of similar triangles are proportional to each other.

Proportional
