Area of polygons worksheet

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

1 a.

triangle with vertices (91, 12), (91, 7), and (-84, 12).
 
 
 
 
1 b.

triangle with vertices (14, 38), (14, -62), and (27, 38).
 
 
 
 
2 a.

parallelogram with vertices (-21, 100), (93, 100), (63, -71), and (-51, -71).
 
 
 
 
2 b.

trapezoid with vertices (-74, 28), (40, 28), (40, -43), and (-20, -43).
 
 
 
 
Page 2

Answer Key

1 a. 

The area is 437.5 square units.

 
1 b. 

The area is 650 square units.

 
2 a. 

The area is 19494 square units.

 
2 b. 

The area is 6177 square units.

 


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