The perimeter of a triangle is 31 cm. Sides #1 and #2 have equal length, while Side #3 is one centimeter shorter than twice the length of Side #1. Let's determine how long each side is:
a. Let z represent the length of Side #1.
What essential part of this “let” statement is missing? What is the length of Side #22 Side
#32
b. Write a mathematical sentence that states that the perimeter is 31 cm.
a
c. Solve the equation you found in part (b) and determine the length of each side. Be sure to label your answers with the
appropriate units.