If the level touched the front of the shelf, the brace must be less than 90 degrees. Subtract 16.66 from 90, giving 73.33 degrees. If the level touched the back of the shelf, the brace must be more than 90 degrees.
45 Degree Angles
In shapes and angles, the triangle is often considered the strongest shape since all the angles are fixed and connected to another point. … To make any shape stronger, connect the points with supporting angles, primarily 45 degree angles.
The length of the protruding leg must be at least two-thirds of the depth of the shelf. For example, if the desired shelf is 12 inches deep, the supporting legs of the bracket must be at least 8 inches. Usually, both legs of the brackets are the same length; but this is not a hard rule.
4 Answers. I would not risk hanging a glass shelf with those strips. They are meant for hanging things directly from (like a towel, hair dryer, etc.), not a shelf that sticks out. Instead of just pulling down on the strip, it will pull down and away, almost a guaranteed recipe for broken glass.
“Triangles are strong because of their inherent structural characteristics. The corner angles of a triangle cannot change without an accompanying change in the length of the edge. Therefore, in order to change a triangle’s shape, an edge must collapse. Edges can be made much stronger than connections.”
The Strength Of Triangles
The triangles which are naturally the strongest are those that have equal sides, so, that is the equilateral triangle and the Isosceles triangle.
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