You can put this solution on YOUR website! what are the angles of an isosceles triangle with a base of 8ft and a height of 1 foot?
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The altitude from between the equal sides makes 2 right triangles with legs of 1 and 4
--> tan = 1/4
2 angles = atan(1/4) =~ 14 degs
--> 14, 14, 152 degs