The shape that has 4 sides and 3 corners would have to be a triangle. There are three particular sides along with the bottom which would equal 4 sides.
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There is no such shape. If it has two sides meeting, it also has to have a corner. A triangle has three sides and three corners, and a square has four sides and four corners. There
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no geometric shape I can think of has 4 sides and 3 corners, unless you mean a pyramid which has 4 sides and 4 points, 3 of which could be called corners and the 4th would be it's
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1. Cover the framing with tar paper or house wrap before you install the siding. Lay the material horizontally on the studs, starting at the bottom of the wall and overlapping each
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