Examine these 3 triangles. Write one equation to represent the sum of all sides that works for all of the triangles. Hint: You'll need to use a variable. First triangle is 4, 7, 8. 1. The second triangle 4, 7, 9. Is 4, 7, 7. The third triangle is The first triangle is 4, 7, 8. 1. The second triangle is 4, 7, 7. The third triangle is 4, 7, 9
