Area of polygons worksheet

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

1 a.

triangle with vertices (-6, -6), (-6, -4), and (4, -6).
 
 
1 b.

triangle with vertices (7, 8), (7, -6), and (8, 8).
 
 
2 a.

triangle with vertices (-10, -7), (-10, 10), and (-1, -7).
 
 
2 b.

triangle with vertices (-7, -10), (-7, -1), and (4, -10).
 
 
Page 2

Answer Key

1 a. 

The area is 10 square units.

 
1 b. 

The area is 7 square units.

 
2 a. 

The area is 76.5 square units.

 
2 b. 

The area is 49.5 square units.

 


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