 # Area of Triangles and Trapezoids base altitude base.

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Area of Triangles and Trapezoids base altitude base

Area of Triangles and Trapezoids Find the area of each triangle. 1. 8.2 ft 1.8 ft 5 ft 8.21.8 4.11.8 7.32ft 2

Area of Triangles and Trapezoids altitude Base 1 Base 2

Area of Triangles and Trapezoids 2. 3 in 4 in 2.5 in5.5 in 32.5 5.5 = 12in 2 3 8 4 3

Area of Triangles and Trapezoids 3.6 yd 3 yd 12 yd 4 yd 2.5 yd rectangle A = l w trapezoid 6 4 24 1.5 5.5 = 44.25 yd 2 36 8.25 rectangle 3 4 3 4 1.5 12

Pg 512 10 – 2 #1 – 7, 8 – 20 Find the area of each triangle. 1. 10 A = 60 m 2 13 m 10 m 12 m A = 5(12) 12

Pg 512 10 – 2 #1 – 7, 8 – 20 Find the area of each triangle. 2. 13.6 A = 47.6 m 2 7 m 13.6 m 12 m8 m A = 6.8(7) 7

Pg 512 10 – 2 #1 – 7, 8 – 20 Find the area of each triangle. 3. 9 A = 36 in 2 9 in 17 in 8 in 10 in A = 4(9) 8

Pg 512 10 – 2 #1 – 7, 8 – 20 Find the area of each trapezoid. 4. 4 A = 22 cm 2 5 cm 4 cm 7 cm 4 cm A = 2 4 7 ( 11 )

Pg 512 10 – 2 #1 – 7, 8 – 20 Find the area of each trapezoid. 5. 3 A = 15 in 2 3 in 7 in A = 5 3 7 ( 3 )

Pg 512 10 – 2 #1 – 7, 8 – 20 Find the area of each trapezoid. 6. 9 A = 63 ft 2 9 ft 10 ft 4 ft A = 7 4 10 ( 9 )

Pg 512 10 – 2 #1 – 7, 8 – 20 7. A triangle and a parallelogram both have areas of 20 cm 2 and bases of 5 cm. What do you know about the heights? A = 20 cm 2 5 cm The height of the triangle is twice that of the parallelogram.

Pg 512 10 – 2 #1 – 7, 8 – 20