Area of polygons worksheet

Findtheareaoftheshapeswhentheirverticesaregiven.

1 a.

trapezoid with vertices (-4, 4), (2, 4), (6, -9), and (-4, -9).
 
 
1 b.

triangle with vertices (-5, 2), (-5, 7), and (-2, 2).
 
 
2 a.

triangle with vertices (9, -7), (9, 9), and (-6, -7).
 
 
2 b.

triangle with vertices (4, -3), (4, -9), and (1, -3).
 
 
Page 2

Answer Key

1 a. 

The area is 104 square units.

 
1 b. 

The area is 7.5 square units.

 
2 a. 

The area is 120 square units.

 
2 b. 

The area is 9 square units.

 


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