Show:
Triangles
Area Relationships
Changing dimensions
Parallelograms
100
What is the area of a triangle with base=9ft and a height=7ft?
31.5 ft
100

How are triangles and rectangles/parallelograms related?

Two equal triangles make one rectangle/parallelogram.

100
What is the perimeter of a new polygon, if the old polygon's perimeter=12 in and the dimensions are doubled?
24 inches
100
What is the formula to find the area of a parallelogram?
A=bh
200
What is the area of a triangle with b=12.1m and h=6.4
38.72
200

What are the 2 things that must be true for a base/height pair?

The base and height must meet at 90 degrees and the height must be the length of the tallest point of the triangle.

200
What is the area of a new polygon, if the area of the old polygon = 16 meters squared and the dimensions are doubled?
64 squared meters
200
What is the area of a parallelogram with b=20 cm and h=11 cm?
220 squared cm
300
What is the base of a triangle whose A=24cm squared and a h=6cm?
b=8
300

Define the term DECOMPOSE

Breaking a shape into several smaller shapes to find the area. 

300

What is the new area of a triangle of b=2 cm and h=1cm and the dimensions tripled?

The new area= 9 cm squared?

300
What is the height of a parallelogram with a b=9 in and A=45in squared?
h=5
400

What is the formula for area of a triangle?

bxh divided by 2

400

What is a vertex?

The point where 2 line segments meet. 

400

What is the area of a rectangle whose b=12.5 yd h=8.25 yd 

35 squared yards

400
Give an example of a triangle and a parallelogram that have the same area
A triangle with b=8, and h=3 and a parallelogram with b=3 and h=4
500

Draw a right triangle. 

Varies

500
How are area and perimeter different?

Perimeter is the length around the outside. Area is the 2 dimensional space inside the shape.

500

What is the area of a wall that is 12 Ft long, 8 Ft tall and has a window in the middle of it that is 2 Ft by 4 Ft?

88 square feet

500
What is the definition of a parallelogram?
A parallelogram has two sets os parallel lines