They are perpendicular lines that meet at right angles which is 90 degrees.
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Dno lolo l l ol o l olo lol ol
to show the shape accurute
That would depend on the shape of the L -- on ration between the horizontal and vertical parts.
it is called a seven sided shape in Canada
A shape that has 8 triangular faces is a octahedron.If you want to see a picture of a octrahedron here is a website.http://en.wikipedia.org/wiki/File:Octahedron.svgI had this as a maths question it was hard.