A pyramid has 4 sides and 3 corners. A triangular prism also has 4 sides and 3 corners. If you look at a pyramid you will notice that there are only three corners, but it actually has 4 sides.

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A square **corner** is a right angle. A right angle is a 90 degree turn. A four **sided** **shape** such as a square or a rectangle has four square **corners**. ...

By its very definition, a quadrilateral is merely a **shape** with four **sides** and four vertices or **corners**. The prefix "quad-" simply means "four" ...

Yes, a square is a rhombus. A rhombus is a **shape with 4 sides** that are all the same size. A square is a rhombus where each **corner** is a right angle. The perimeter ...