RECTANGLES TRIANGLES PARALLELOGRAMS AND TRAPEZOIDS Area of RECTANGLES

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RECTANGLES, TRIANGLES, PARALLELOGRAMS, AND TRAPEZOIDS Area of

RECTANGLES, TRIANGLES, PARALLELOGRAMS, AND TRAPEZOIDS Area of

RECTANGLES Area = base x height 6 10 For the Rectangle: What is the

RECTANGLES Area = base x height 6 10 For the Rectangle: What is the base? 10 What is the height? 6 What is the area? 60 units 2

TRIANGLES Area = base x height 2 Ø What is the base? 10 6

TRIANGLES Area = base x height 2 Ø What is the base? 10 6 Ø What is the height? 6 Area = 6 x 10 = 60 = 30 2 2 10 The area of the triangle = 30 units 2

PARALLELOGRAMS Area = base x height Ø What is the base? 4 3 Ø

PARALLELOGRAMS Area = base x height Ø What is the base? 4 3 Ø What is the height? 3 12 units 2 4 Ø What is the area?

PARALLELOGRAMS For the Rectangle: What is the base? 6 What is the height? 3

PARALLELOGRAMS For the Rectangle: What is the base? 6 What is the height? 3 3 What is the area? 18 units 2 For the Triangle: 2 6 What is the base? 2 What is the height? 3 What is the area? 6/2 = 3 units 2

PARALLELOGRAMS For the Parallelogram 3 How many triangles? 2 How many 1 rectangles? 24

PARALLELOGRAMS For the Parallelogram 3 How many triangles? 2 How many 1 rectangles? 24 units 2 Total area? (18 + 3 + 2 6 8 For 3)the Parallelogram: What is the base? 6+2 What is the height? 3 What is the area? 24 units 2

TRAPEZOIDS For the Trapezoid: 6 3 2 6 10 2 What is the top

TRAPEZOIDS For the Trapezoid: 6 3 2 6 10 2 What is the top base? 6 What is the bottom 10 base? What is the height? 3

TRAPEZOIDS Area = (base 1 + base 2) x height 6 2 3 10

TRAPEZOIDS Area = (base 1 + base 2) x height 6 2 3 10 What is base 1 + base 2? 16 48 Multiply it by the height. Now divide by 2! What is the area? 24 units 2

WHAT HAVE WE LEARNED? • The area of a triangle is half the area

WHAT HAVE WE LEARNED? • The area of a triangle is half the area of a rectangle. • Parallelograms can be formed by putting together two congruent triangles. • Parallelograms and trapezoids can be formed by putting together a rectangle and two congruent triangles. • Use your NSCAS reference sheet to find the formulas you need to find the area of these regular polygons.