Area of polygons worksheet

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

1 a.

triangle with vertices (-10, -9), (-3, 1), and (8, 2).
 
 
1 b.

triangle with vertices (10, -8), (-8, 2), and (-2, 7).
 
 
2 a.

quadrilateral with vertices (-9, 3), (2, 9), (2, -1), and (-5, -5).
 
 
2 b.

quadrilateral with vertices (-2, 5), (2, 8), (4, -8), and (-10, -3).
 
 
Page 2

Answer Key

1 a. 

The area is 51.5 square units.

 
1 b. 

The area is 75 square units.

 
2 a. 

The area is 91 square units.

 
2 b. 

The area is 111 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