Area of polygons worksheet

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

1 a.

trapezoid with vertices (0, 9), (3, 9), (5, -2), and (-5, -2).
 
 
 
 
1 b.

triangle with vertices (-3, 8), (-3, 0), and (-6, 8).
 
 
 
 
2 a.

triangle with vertices (-1, 1), (-1, 5), and (-8, 1).
 
 
 
 
2 b.

trapezoid with vertices (-5, 5), (10, 5), (2, -7), and (-9, -7).
 
 
 
 
Page 2

Answer Key

1 a. 

The area is 71.5 square units.

 
1 b. 

The area is 12 square units.

 
2 a. 

The area is 14 square units.

 
2 b. 

The area is 156 square units.

 


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