4. Equilateral and Isosceles Triangles
Exercise 24 Page 257
Subchapter links expand_more 1 2 3 4 Monitoring Progress 5 (Page 255)
arrow_right Monitoring Progress p.253-255
Sign In
Note that every side has equal length of 5 balls.
39 inches
From the diagram, we can see that every side has equal length of 5 balls. This means that we are dealing with an equilateral triangle.
Since all the sides are congruent, we can equate their expressions. Let's choose 2x-3 and x+5.
Knowing that x= 8, we can calculate the exact length of the sides. To do so we will substitute the value of x to any of the expressions.
Finally, we can calculate the perimeter by adding the side lengths. 13+13+13=39 inches