Area of polygons worksheet

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

1 a.

triangle with vertices (8, -23), (8, -32), and (-49, -23).
 
 
 
 
1 b.

triangle with vertices (-49, -25), (-49, 7), and (50, -25).
 
 
 
 
2 a.

trapezoid with vertices (-30, 1), (41, 1), (46, -7), and (-3, -7).
 
 
 
 
2 b.

trapezoid with vertices (-34, 38), (41, 47), (41, -2), and (-34, -16).
 
 
 
 
Page 2

Answer Key

1 a. 

The area is 256.5 square units.

 
1 b. 

The area is 1584 square units.

 
2 a. 

The area is 480 square units.

 
2 b. 

The area is 3862.5 square units.

 


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