LESSON 9 Sorting 3-D Shapes

Shape Finder Chart

Mrs. Hunter's class is making a Shape Finder Chart that lists properties of shapes and possible shapes that fit each property. A property is an attribute or characteristic of a shape that helps identify it.

Make your own Shape Finder Chart. Find at least one 3-D shape for each property. Make a list and be ready to explain how you made your choice.

At least one triangle face
At least 12 edges
Opposite faces are parallel and congruent
At least one right angle
No vertices
At least one pair of parallel edges
At least one rectangular face

Writing Geometry Riddles

Mrs. Hunter's students wrote riddles about the 3-D shapes.

Here is a riddle that Romesh wrote:

After the first clue, Nisha guessed that it could be the cone, square pyramid, triangular pyramid, or hexagonal pyramid. After the second clue, she eliminated the square pyramid because it has right angles. Finally, after the reading the last clue, she knew the answer.