Area of polygons worksheet

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

1 a.

triangle with vertices (4, 8), (9, 1), and (8, 9).
 
 
 
 
1 b.

triangle with vertices (5, 8), (0, 1), and (1, 8).
 
 
 
 
2 a.

triangle with vertices (0, 5), (4, 10), and (2, 9).
 
 
 
 
2 b.

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

Answer Key

1 a. 

The area is 16.5 square units.

 
1 b. 

The area is 14 square units.

 
2 a. 

The area is 3 square units.

 
2 b. 

The area is 5 square units.

 


Copying permission: You are free to copy this worksheet to any number of students for their mathematics work. Do not distribute on websites, books, or any such material without permission. Copyright www.HomeschoolMath.net