Area of polygons worksheet

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

1 a.

triangle with vertices (-4, -1), (10, -5), and (0, -4).
 
 
 
 
1 b.

triangle with vertices (8, -6), (-10, 5), and (4, -10).
 
 
 
 
2 a.

quadrilateral with vertices (-3, 6), (5, 10), (9, -4), and (-7, -5).
 
 
 
 
2 b.

triangle with vertices (-9, -10), (5, 4), and (7, 6).
 
 
 
 
Page 2

Answer Key

1 a. 

The area is 13 square units.

 
1 b. 

The area is 58 square units.

 
2 a. 

The area is 150 square units.

 
2 b. 

The area is 0 square units.

 


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