Area of polygons worksheet

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

1 a.

triangle with vertices (10, 1), (10, 9), and (6, 1).
 
 
 
 
1 b.

trapezoid with vertices (-2, 7), (9, 7), (1, -4), and (-9, -4).
 
 
 
 
2 a.

triangle with vertices (6, 3), (6, -6), and (5, 3).
 
 
 
 
2 b.

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

Answer Key

1 a. 

The area is 16 square units.

 
1 b. 

The area is 115.5 square units.

 
2 a. 

The area is 4.5 square units.

 
2 b. 

The area is 304 square units.

 


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