These five convex polyhedra have identical regular polygon faces and the same number of faces at every vertex.

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Your new ahaPlatonic Solids

Platonic Solids: Three-dimensional shapes built from identical regular polygon faces. Source: Platonic solid ↗

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19Measured in cubic units, this quantity describes the space an object occupies.RECALL
Volume
Volume measures the space inside a three-dimensional object, expressed in cubic units.
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20This covering of a surface fits shapes together without gaps or overlaps.IDENTIFY
Tessellation
Tessellations tile a surface with repeating shapes and no gaps, a technique famous in M. C. Escher's art.
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21For a right triangle, this theorem states that a² + b² = c², with c the hypotenuse.RECALL
The Pythagorean Theorem
The Pythagorean theorem states that a right triangle's two shorter sides squared sum to the hypotenuse squared.
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