Parallelogram and Triangles

Area of Rectangles, Parallelograms, and trapezoids

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A Closer Look

A= Area
B= Base
H= Height

Multiple Choice

Which is the Correct formula for area of a triangle ?

• $$\frac{1}{2}B\ \times H$$

• $$B\ \times H$$

• $$\frac{1}{3}B\ \times H$$

• base / height $$\frac{1}{2}B\div H$$

Multiple Choice

which number represents the base in this triangle

• 24

• 8

​Since the full base of the triangle here is 24, That means half of the full base would be 12.


WHEN FINDING AREA OF A TRIANGLE. YOU TAKE HALF OF THE BASE

Multiple Choice

Which of these is the correct formula for the area of this triangle

• $$\frac{1}{2}\left(24\right)\times8$$

• $$\frac{1}{2}\left(8\right)\times24$$

Fill in the Blank

Using the formula what is the area of this triangle ?

Multiple Choice

What is the area of this triangle?

• 57

• 2.39

• 112

• 56

A= Area

B= Base

H= Height

A closer look at the Area of a Parallelogram

Multiple Choice

What is the correct formula for area of a Parallelogram ?

• $$B\times\frac{1}{H}$$

• $$B\times H$$

• $$\frac{1}{2}B\ \times H$$

• $$B\ \div H$$

Draw

Draw a Parallelogram with a base of 12 and a height of 10 and find the area using the formula you've learned.