Area of polygons worksheet

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

1 a.

triangle with vertices (3, 1), (3, 7), and (4, 1).
 
 
 
 
1 b.

trapezoid with vertices (4, 9), (7, 8), (7, 2), and (4, 3).
 
 
 
 
2 a.

triangle with vertices (0, 0), (0, 6), and (1, 0).
 
 
 
 
2 b.

trapezoid with vertices (1, 10), (9, 10), (9, 2), and (1, 4).
 
 
 
 
Page 2

Answer Key

1 a. 

The area is 3 square units.

 
1 b. 

The area is 18 square units.

 
2 a. 

The area is 3 square units.

 
2 b. 

The area is 56 square units.

 


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