Notes Over 10 - 2

1
Notes Over 10 - 2
Area of Triangles and Trapezoids
altitude
base
base
base
2
Notes Over 10 - 2
Area of Triangles and Trapezoids
Find the area of each triangle.
8.2
1.8
4.1
1.8
7.32
ft2
3
Notes Over 10 - 2
Area of Triangles and Trapezoids
4
Notes Over 10 - 2
Area of Triangles and Trapezoids
3
2.5
5.5
8
3
3
4
12
in2
5
Notes Over 10 - 2
Area of Triangles and Trapezoids
rectangle
trapezoid
3
4
1.5
6
3
4
4
1.5
5.5
24
12
yd2
44.25
36
8.25
6
Pg 512 10 2 1 7, 8 20
Find the area of each triangle.
12 m
13 m
1.
12
10
13 m
10 m
A 5(12)
A 60 m2
7
Pg 512 10 2 1 7, 8 20
Find the area of each triangle.
2.
12 m
8 m
7 m
7
13.6
13.6 m
A 6.8(7)
A 47.6 m2
8
Pg 512 10 2 1 7, 8 20
Find the area of each triangle.
9 in
3.
8 in
17 in
8
9
10 in
A 4(9)
A 36 in2
9
Pg 512 10 2 1 7, 8 20
Find the area of each trapezoid.
4 cm
4.
5 cm
4 cm
7
4
4
7 cm
( 11 )
A 2
A 22 cm2
10
Pg 512 10 2 1 7, 8 20
Find the area of each trapezoid.
7 in
5.
3 in
7
3
3
3 in
( 3 )
A 5
A 15 in2
11
Pg 512 10 2 1 7, 8 20
Find the area of each trapezoid.
6.
9 ft
4 ft
10 ft
10
9
4
( 9 )
A 7
A 63 ft2
12
Pg 512 10 2 1 7, 8 20
7. A triangle and a parallelogram both have
areas of 20 cm2 and bases of 5 cm. What do you
know about the heights?
A 20 cm2
5 cm
5 cm
The height of the triangle is twice that of the
parallelogram.
13
Pg 512 10 2 1 7, 8 20