# Area of 2-D Shapes Poster

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Display this educational poster when learning about finding the area of 2D shapes.

This poster provides a definition for area and outlines the formulas used for:

• squares
• rectangles
• circles
• parallelograms
• right angled triangles
• non-right angled triangles.

This teaching resource is available in color and black and white.

#### Common Core Curriculum alignment

• CCSS.MATH.CONTENT.3.MD.C.7

Relate area to the operations of multiplication and addition.

• CCSS.MATH.CONTENT.3.MD.C.7.A

Find the area of a rectangle with whole-number side lengths by tiling it, and show that the area is the same as would be found by multiplying the side lengths.

• CCSS.MATH.CONTENT.3.MD.C.7.B

Multiply side lengths to find areas of rectangles with whole-number side lengths in the context of solving real world and mathematical problems, and represent whole-number products as rectangular areas in mathematical reasoning.

• CCSS.MATH.CONTENT.3.MD.C.7.C

Use tiling to show in a concrete case that the area of a rectangle with whole-number side lengths a and b + c is the sum of a ร b and a ร c. Use area models to represent the distributive property in mathematical reasoning.

• CCSS.MATH.CONTENT.3.MD.C.7.D

Recognize area as additive. Find areas of rectilinear figures by decomposing them into non-overlapping rectangles and adding the areas of the non-overlapping parts, applying this technique to solve real world problems.

• CCSS.MATH.CONTENT.4.MD.A.3

Apply the area and perimeter formulas for rectangles in real world and mathematical problems. For example, find the width of a rectangular room given the area of the flooring and the length, by viewing the area formula as a multiplication equation wi...

• CCSS.MATH.CONTENT.6.G.A.1

Find the area of right triangles, other triangles, special quadrilaterals, and polygons by composing into rectangles or decomposing into triangles and other shapes; apply these techniques in the context of solving real-world and mathematical problems...

• CCSS.MATH.CONTENT.7.G.B.4
• CCSS.MATH.CONTENT.7.G.B.6

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