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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

MEAP Preparation - Grade 7 Mathematics
3.11 Geometry - Polyhedrons

Polyhedron: A solid bounded by plane faces or polygons, especially by more than four is known as polyhedredron. The plane faces or polygons are also called faces.

Type of Solids:


A regular polyhedron has similar shaped faces. An irregular polyhedron has different shaped faces. The 5 regular polyhedra are:
Cube has 6 square faces.
Regular tetrahedron has 4 triangular faces.
Regular octahedron has 8 triangular faces.
Regular dodecahedron has 12 pentagonal faces.
Regular icosahedron has 20 triangular faces.

Example: What is the shape of face in a tetrahedron?
Answer: Triangle


Directions: Answer the following questions. Draw at least 5 polyhedrons on a sheet of paper.
Q 1: What is another name for a vertex?
array
point
corner

Q 2: A slide is the same as a translation.
True
False

Q 3: If a tetrahedron has a base of 8 in. and a height of 7.5 in., what would be the surface area of one of its sides? (hint: A= b X H divide by 2)
30 square inches
140 square inches
200 square inches
60 square inches

Q 4: A polyhedron must be made up of the same shaped face.
False
True

Q 5: An irregular polyhedron is a polyhedron with two or more different shaped faces.
True
False

Q 6: Using the shape spinner tell how many faces a Octahedron has.
9
8
12
10

Q 7: A rotation is the same as a flip.
False
True

Q 8: Using the shape spinner tell how many faces a Dodecahedron has.
31
20
8
12

Question 9: This question is available to subscribers only!

Question 10: This question is available to subscribers only!


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