Area of polygons worksheet

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

1 a.

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

triangle with vertices (5, -1), (-3, -8), and (8, 1).
 
 
2 a.

triangle with vertices (5, 8), (-3, -7), and (-4, -5).
 
 
2 b.

quadrilateral with vertices (-6, 9), (7, 2), (8, -10), and (-2, -9).
 
 
Page 2

Answer Key

1 a. 

The area is 65 square units.

 
1 b. 

The area is 2.5 square units.

 
2 a. 

The area is 15.5 square units.

 
2 b. 

The area is 162.5 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