Area of polygons worksheet

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

1 a.

triangle with vertices (-1, 8), (-1, -14), and (41, 8).
 
 
 
 
1 b.

triangle with vertices (42, 44), (42, -11), and (-46, 44).
 
 
 
 
2 a.

triangle with vertices (-12, -12), (-12, -49), and (-46, -12).
 
 
 
 
2 b.

triangle with vertices (4, 22), (4, -6), and (36, 22).
 
 
 
 
Page 2

Answer Key

1 a. 

The area is 462 square units.

 
1 b. 

The area is 2420 square units.

 
2 a. 

The area is 629 square units.

 
2 b. 

The area is 448 square units.

 


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