Area of polygons worksheet

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

1 a.

triangle with vertices (3, 5), (3, 6), and (8, 5).
 
 
 
 
1 b.

triangle with vertices (10, 2), (10, 8), and (9, 2).
 
 
 
 
2 a.

triangle with vertices (0, 4), (0, 3), and (5, 4).
 
 
 
 
2 b.

triangle with vertices (3, 9), (3, 5), and (7, 9).
 
 
 
 
Page 2

Answer Key

1 a. 

The area is 2.5 square units.

 
1 b. 

The area is 3 square units.

 
2 a. 

The area is 2.5 square units.

 
2 b. 

The area is 8 square units.

 


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