Area of polygons worksheet

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

1 a.

trapezoid with vertices (-11, 50), (39, 11), (39, -4), and (-11, -48).
 
 
 
 
1 b.

trapezoid with vertices (-21, 46), (41, 48), (41, -16), and (-21, -25).
 
 
 
 
2 a.

triangle with vertices (-14, -42), (-14, -7), and (47, -42).
 
 
 
 
2 b.

trapezoid with vertices (-17, 5), (10, 37), (10, -44), and (-17, -47).
 
 
 
 
Page 2

Answer Key

1 a. 

The area is 2825 square units.

 
1 b. 

The area is 4185 square units.

 
2 a. 

The area is 1067.5 square units.

 
2 b. 

The area is 1795.5 square units.

 


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