13. Interior angles of a triangle measure 180
2w + w + 90 = 180
3w + 90 = 180
3w = 180 - 90
3w = 90
w = 90/3
w = 30
so m < F = 2w = 2(30) = 60 and m < H = w = 30
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u got 14 right...
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15. Remember that angles in a triangle add up to 180.
So triangle BAC......20 + 75 + m < B = 180
95 + m < B = 180
m < B = 180 - 95
m < B = 85
These triangles are similar, because if u did the same thing for the other triangle, u will find that both triangles have the exact same angle measures.
