Basic geometric elements

[object Object],[object Object],[object Object]

[object Object],IN THIS CASE THE POINT OF INTERSECTION IS D

[object Object],[object Object],r

[object Object],[object Object],A A

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],CLASIFICATION BY MEASUREMENT

[object Object],[object Object],   º 

[object Object],   º

[object Object],[object Object],examples of regular polygons examples of irregular polygons

[object Object],THESE FUGURES ARE CONVEX

[object Object],Note the red line segment drawn between two points inside the figure that also passes outside the figure.

[object Object],3 SIDES (TRIANGLES) Equilateral Triangle A triangle that has three sides of equal length. The angles of an equilateral triangle all measure 60 degrees.

[object Object],[object Object]

The radius of a circle is the distance from the center of the circle to the outside edge. RADIUS

The diameter of a circle: The diameter of a circle is the longest distance across a circle. (The diameter cuts through the center of the circle. This is what makes it the longest distance.)

(the perimeter of a circle) The circumference of a circle is the perimeter -- the distance around the outer edge. Circumference = where r = the radius of the circle and pi = 3.141592...

A chord of a circle is a line segment that connects one point on the edge of the circle with another point on the circle. (The diameter is a chord -- it's just the longest chord!)

An arc of a circle is a segment of the circumference of the circle.

A sector of a circle is a pie shaped portion of the area of the circle. Technically, the piece of pie is between two segments coming out of the center of the circle.

Basic geometric elements

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