Area - mixed
Area of Parallelogram
Area of a Triangle
Area of a Trapezoid
Name that Polygon
100
What is the formula for area of a square?
Area = side * side
A = s2
100
Find the area of this parallelogram.
A = 5 * 10
A = 50 cm2
100
Why is the formula for area of a triangle split in half?
Because when we decompose a parallelogram we can make two triangles
100
What is the formula for area of a trapezoid split in half?
Because when we decompose a parallelogram we can make two trapezoids
100
I can be decomposed into 5 triangles
Pentagon
200
What is the area of this parallelogram?
Hint: Area = base * height
72 cm2
200
Is area measured in squared or cubed units?
squared
200
What is the area of a triangle that has a base of 5 cm and a height of 4 cm?
10 cm2
200
What is the area of a trapezoid with b1=10 ft, b2=4 ft, and the height of 7ft?
49 feet2 because 10 + 4 = 14 and times 7 = 98, then we divide by 2 and get our answer of 49 ft2
200
I can be decomposed into 6 triangles
Hexagon
300
What is the formula for the area of a parallelogram?
Area = base * height
A = b*h
300
What is the area of a parallelogram that has the length of 9 cm and a width of 5 cm?
45 cm2
300
What is the area of triangle with the height of 10 cm and a base of 3 cm?
15 cm2
300
What is the area of a trapezoid:
b1 = 8 cm
b2 = 4 cm
height = 5 cm
30 cm2
5(8 + 4) = 60 and divide by 2.
300
I have 10 vertices
Decagon
400
What is the formula for the area of a triangle?
Area = 1/2 b*h
Area = b*h divided by 2
400
What is the area of a parallelogram that has a length of 4 cm and width of 11 cm?
A = 4* 11
44 cm2
400
What is the area of a right triangle with a height of 8 m and a base of 5 m?
20 m2
400
What is the area of trapezoid:
b1: 12 cm
b2: 8 cm
height: 3 cm
30 cm2
3(12 + 8) = 60 then divide by 2 = 30
400
I have 8 points
Octagon
500
What is the formula for the area of a trapezoid?
Area = h(b1 + b2) /2
500
What is length of a parallelogram if the area is 100 in2 and the width is 4 in?
A = b * h
100 = b * 4
The length is 25 in.
500
What is the area of a triangle with a height of 9 ft and a base of 3 ft?
13.5 ft2
500
What is the area of a trapezoid:
b1: 8 m
b2: 10 m
height: 5 m
45 m2
5(8 + 10) = 90 and then divide by 2 = 45
500
I have 4 sides and two sets of parallel lines and 4 right angles
Rectangle