Question

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Answer 1

@escamer @benlindquist @Astrophysics @clarkydances

Answer 2

Do you know why the little line is on two of the three sides of the triangle?

Answer 3

it means they are congruent

Answer 4

@IvyJane --- Sorry, my OS is acting up, not showing notifications.

But yes, they are the same, so CD = CE. That means 3x-4 is also CE

Now that we have the lengths of all 3 sides and the total on what it needs to be (which is 88), how would we find the perimeter?