Question

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What is the perimeter of triangle JEG?

60 units
65 units
70 units
75 units

Answer 1

60 units

Explanation:

Each point is the peak of an isosceles triangle so, e.g.

2x = 3x - 5

5 = x

We get 2x=10, 3x-5=10, x+5=10, so all six sides 10.

Answer 2

Each point is the peak of an isosceles triangle so, e.g.

2x = 3x - 5

5 = x

We get 2x=10, 3x-5=10, x+5=10, so all six sides 10.

Answer: 60 units