Area of polygons worksheet

Find the area of the shapes when their vertices are given.

1 a.

triangle with vertices (4, -6), (4, 9), and (-5, -6).
 
 
1 b.

trapezoid with vertices (-4, 4), (10, 6), (10, -5), and (-4, -2).
 
 
2 a.

triangle with vertices (-4, 5), (-4, 0), and (7, 5).
 
 
2 b.

trapezoid with vertices (-5, 4), (4, 4), (0, -2), and (-3, -2).
 
 
Page 2

Answer Key

1 a. 

The area is 67.5 square units.

 
1 b. 

The area is 119 square units.

 
2 a. 

The area is 27.5 square units.

 
2 b. 

The area is 36 square units.

 


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