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Tessellations that use more than one type of regular polygon are called regular tessellations?
No. Regular tessellations use only one polygon. And, according to the strict definition of regular tessellation, the polygon must be regular. Then a tessellation using rectangles, for example, cannot be called regular.
Are all polygons regular?
Not all polygons are regular by definition. An irregular polygon may have non-congruent sides or non congruent angles or both. A regular polygon will always have both congruent sides and angles.
What is the definition of a regular pyramid?
A regular pyramid is a right pyramid whose base is a regular polygon. There are only three regular pyramids: a regular tetrahedron, a regular square pyramid, and a regular pentagonal pyramid.
What is the difference between a regular polygon and non-regular polygon?
All the sides of a regular polygon have the same length. If two or more sides of a polygon have different lengths, then the polygon is not regular.
Is a rectangle an irregular polygon?
Yes. Unless it happens to be a square, not all sides have the same length - and the definition of a regular polygon includes having all sides of the same length.
