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

Q 2: An irregular polyhedron is a polyhedron with two or more different shaped faces.
True
False

Q 3: A slide is the same as a translation.
True
False

Q 4: Using the shape spinner tell how many faces a Dodecahedron has.
12
20
31
8

Q 5: What are the shapes of the faces in a Dodecahedron?
Pentagon
Square
Triangle
Hexagon

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

Q 7: 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)
200 square inches
30 square inches
60 square inches
140 square inches

Q 8: What kind of face shape does the octahedron have?
octagon
hexagon
triangle
square

Question 9: This question is available to subscribers only!

Question 10: This question is available to subscribers only!


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