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Home > CCG > Chapter 3 > Lesson 3.2.4 > Problem 3-91


The dashed line at right represents the line of symmetry of the shaded figure. Find the area and perimeter of the shaded region. Show all work.  

Since you have been given the line of symmetry, you can now determine the lengths of all sides of the above figure.

Label all the sides that have been left blank.

To find the perimeter, add up the values of all sides.

To find the area, split the shape into two separate parts.

Find the area of each individual shape, then add the two together to find the area of the shape in its entirety.