NOT sure, but I think the little marks on the side of the triangle mean that both sides are '12' each.
Pythagorean theorem:
x = sqrt (12^2 + 12^2) = sqrt (288) = 16.97 units
NOT sure, but I think the little marks on the side of the triangle mean that both sides are '12' each.
Pythagorean theorem:
x = sqrt (12^2 + 12^2) = sqrt (288) = 16.97 units