Area of polygons worksheet

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

1 a.

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

triangle with vertices (-3, 7), (-3, -7), and (5, 7).
 
 
 
 
2 a.

trapezoid with vertices (-2, 5), (7, 7), (7, -2), and (-2, -1).
 
 
 
 
2 b.

triangle with vertices (7, 4), (7, -2), and (-5, 4).
 
 
 
 
Page 2

Answer Key

1 a. 

The area is 4.5 square units.

 
1 b. 

The area is 56 square units.

 
2 a. 

The area is 67.5 square units.

 
2 b. 

The area is 36 square units.

 


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