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Identify and describe convex, concave, regular, and irregular polygons.
Remarks
Example 1: Draw a hexagon. Is it convex or concave? Is it regular or irregular? Explain your answers.Example 2: Define the terms convex, concave, regular and irregular polygon and draw a picture of the tern next to the definition.
General Information
Subject Area: X-Mathematics (former standards - 2008)
Grade: 912
Body of Knowledge: Geometry
Idea: Level 3: Strategic Thinking & Complex Reasoning
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.
Date Adopted or Revised: 09/07
Content Complexity Rating:
Level 3: Strategic Thinking & Complex Reasoning
-
More Information
Date of Last Rating: 06/07
Status: State Board Approved - Archived
Assessed: Yes
Related Access Points
Alternate version of this benchmark for students with significant cognitive disabilities.
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Image/Photograph
Student Resources
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Parent Resources
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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
