Intro to 3D Geometry

What does the "D" stand for in 3D?

• dimensional

• dominos

• ducks

• doom

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A 3D figure that encloses a space.

• solid

• liquid

• gas

• plasma

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A solid whose faces are all polygons.

• polyhedron

• box

• block

• prism

• pyramid

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A flat 2D surface of a polyhedron.

• face

• nose

• body

• eye

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A line segment where 2 faces intersect.

• edge

• cliff

• borderline

• line

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A point where 3 or more edges intersect.

• vertex

• corner

• dot

• pointy part

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A polyhedron that has 2 parallel, identical bases and lateral faces are are all parallelograms.

• prism

• pyramid

• cone

• cylinder

• sphere

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A polyhedron that has one base and lateral faces that are all triangles

• prism

• pyramid

• cone

• cylinder

• sphere

How many faces does this shape have?

• 4

• 6

• 8

• 12

How many edges does this shape have?

• 4

• 6

• 8

• 12