Shape Up!
Formulate the Answer
Think Outside the Box.
Three's Company
RANDOM
100
What is the formula for finding the area of a rectangle?
A = lw
100
How can you find the area of an irregular polygon (one that isn't a rectangle or triangle)?
Divide the polygon into shapes that you know how to find the area of (rectangles and triangles). Find the area of each individual shape and add the areas up to find the total area. DECOMPOSE.

Or, you can make the shape into one you know a formula for, then subtract what you don't need. 

100
What is the formula for finding the area of a parallelogram?
A = bh
100
What is the formula for finding the area of a triangle?
A = 1/2 bh or A=bh/2
100
What is our format for finding the area of any polygon?
1. Formula

2. Substitute

3. Solve

200
Find the area of a square with sides of 3.2 mm
A = 10.24 mm2
200
Find the area of a rectangle with a length of 12 in. and a width of 3 in.
A = 36 in.2
200
Find the area of a square with sides of 2.5 feet.

6.25 ft2

200
Find the area of a triangle with a base of 8 ft and a height of 3 ft
A = 12 ft2
200
a triangle has a base of 10 and a height of 16, a parallelogram has a base of 10 and a height of 16. Which one has the larger area? How do you know?
The parallelogram has the larger area because to find the area you would do A=bh, so A=10x16. For the triangle, you would do A=bh/2, so A=10x16/2. The triangle's area would be half the size of the parallelogram 
300
You plot point B at (6, -2). In which quadrant does point B lie?
Quadrant IV
300
Find the area of a parallelogram with a base of 5 yd and a height of 3 yd.
A = 15 yd2
300
Find the perimeter of a triangle with sides of 8 ft, 4 ft and 6 ft, and a height of 3 ft.
18 ft
300
Find the area of a triangle with a base of 7 cm and a height of 4 cm
A = 14 cm2
300
Why is it so important to attend to precision when plotting points so you can find the perimeter of a polygon on a coordinate plane?
If you incorrectly plot a point, your perimeter will be off because you won't make the exact shape you are supposed to plot. 
400
You plot point A at (-4, 5). In which quadrant does point A lie?
Quadrant II
400
Find the distance between these two points. (5, -2) and (5, 7)
9 units
400
Find the perimeter of a rectangle with a length of 12 inches and a width of 4 inches.
32 inches
400
Find the area of a triangle with a base of 8.2 inches and a height of 4.5 inches
18.45 in.2
400
3.54 x 17.8
63.012
500
Find the distance between these two points. (-6, 4) and (-9, 4)
3 units
500

The area of a rectangle is 35 cm2. The length is 2.5 cm. What is the width of the rectangle?

14 cm

500
Mary wants to grow a square garden with sides that are 8 feet long. What will the perimeter AND the area of the garden be?
The perimeter will be 32 feet, and the area will be 64 ft2
500
Jack wants to order carpet for an odd shaped room.  Part of the room is a rectangle with a length of 13.1 ft and a width of 6 ft.  Another section of the room is a triangle with a base of 3.4 ft and a height of 3 ft.  What is the total square feet of the room?
83.7 ft2
500
What is scale factor? Give an example of a problem that would ask you to use scale factor. 
Scale factor is the amount each unit on the coordinate grid represents. 


Find the distance between two points on a grid, each unit represents 5 feet. 

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