# Geometry

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Show that Euler's formula holds for a right pentagonal prism.

• Geometry -

His formula for polyhedra is
Vertices - Edges + Faces = 2

Sketch two congruent pentagons, one above the other.
Join corresponding vertices, perhaps with dotted lines for the lines that are hidden.
You should have a nice drawing of your solid.

Number of vertices = 10
number of edges = 15
number of faces = 7

is 10 - 15 + 7 = 2 ??

YES!!!!

• Geometry -

Thank you!

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