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Determine if polygons have all sides and angles equal (regular) or have sides or angles that are not equal (irregular) using physical and visual models.
Clarifications:
Regular polygons include square, equilateral triangle, octagon, and pentagon. Irregular polygons include certain parallelograms, such as rectangles, and certain triangles, such as a right triangle.
General Information
Number: MA.912.G.2.In.a
Category: Independent
Date Adopted or Revised:
09/07
Standard:
Polygons : Identify and describe polygons (triangles, quadrilaterals, pentagons, hexagons, etc.), using terms such as regular, convex, and concave. Find measures of angles, sides, perimeters, and areas of polygons, justifying the methods used. Apply transformations to polygons. Relate geometry to algebra by using coordinate geometry to determine transformations. Use algebraic reasoning to determine congruence, similarity, and symmetry. Create and verify tessellations of the plane using polygons.
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Image/Photograph
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1 Image/Photograph
Clipart: Geometric Shapes:
In this lesson, you will find clip art and various illustrations of polygons, circles, ellipses, star polygons, and inscribed shapes.
Type: Image/Photograph
