Area of polygons worksheet

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

1 a.

triangle with vertices (5, 7), (5, 10), and (8, 7).
 
 
 
 
1 b.

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

triangle with vertices (6, -2), (6, -4), and (-7, -2).
 
 
 
 
2 b.

triangle with vertices (3, -3), (3, 5), and (10, -3).
 
 
 
 
Page 2

Answer Key

1 a. 

The area is 4.5 square units.

 
1 b. 

The area is 4 square units.

 
2 a. 

The area is 13 square units.

 
2 b. 

The area is 28 square units.

 


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