Area of polygons worksheet

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

1 a.

trapezoid with vertices (0, 7), (9, 6), (9, 4), and (0, 0).
 
 
 
 
1 b.

triangle with vertices (2, 9), (2, 5), and (8, 9).
 
 
 
 
2 a.

trapezoid with vertices (0, 7), (7, 7), (10, 2), and (0, 2).
 
 
 
 
2 b.

triangle with vertices (4, 3), (4, 1), and (3, 3).
 
 
 
 
Page 2

Answer Key

1 a. 

The area is 40.5 square units.

 
1 b. 

The area is 12 square units.

 
2 a. 

The area is 42.5 square units.

 
2 b. 

The area is 1 square units.

 


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