Find the area of the triangle.
 $A\ =\ \frac{bh}{2}$  

The two bases in a trapezoid must always be ____________ one another.

Hint: Turn to SRB page 242-243 for assistance.

Find the area of the trapezoid.
A =  $\frac{h\left(b1+b2\right)}{2}$  

Find the area of the parallelogram.
A =  $b\cdot h$  

Find the area of the parallelogram.
A =  $b\cdot h$  

Find the area of the rectangle.
A =  $b\cdot h$  

What is the area of the parallelogram?
Hint: Use the coordinate grids to figure out the base and height.
A =  $b\cdot h$  

Sally won an award in the shape of a parallelogram with an area of 735 squared centimeters. The base is 35 centimeters long. What is the height?

Hint: Work backwards to find the missing measure.

A =  $b\cdot h$  

This is a picture of a parallelogram.

What characteristics support this conclusion?

Hint: Turn to SRB page 242-243 for assistance.

Find the area of the trapezoid.
A =  $\frac{h\left(b1+b2\right)}{2}$  

What is the area of this square?
A =  $s^2$  or  $s\cdot s$  

What is the perimeter of this square?

Find the perimeter of the parallelogram.

Hint: Find the distance around.

What determines the height (altitude) of any quadrilateral?

The area of a triangle is 21 units. If the height is 7 units, then what is the base?

Hint: Work backwards to find the missing measure.

A =  $\frac{bh}{2}$