Area of polygons worksheet

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

1 a.

triangle with vertices (-4, -3), (-4, 2), and (8, -3).
 
 
1 b.

triangle with vertices (4, -6), (4, -10), and (-2, -6).
 
 
2 a.

triangle with vertices (-8, 5), (-8, -10), and (-2, 5).
 
 
2 b.

triangle with vertices (7, -4), (7, 0), and (-4, -4).
 
 
Page 2

Answer Key

1 a. 

The area is 30 square units.

 
1 b. 

The area is 12 square units.

 
2 a. 

The area is 45 square units.

 
2 b. 

The area is 22 square units.

 


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