Assess Yourself
How well do you understand the ideas in this lesson?
Goal:
Goal:
Show What You Know!
Are you ready to take this lesson's quiz? These questions will help you find out. Go back to the lesson if you do not know an answer.
Which 3-D shape is round and has no faces, edges, or vertices?
- cube
- triangular prism
- sphere
Sorry, that is not correct. A sphere is round like a ball and has no faces, edges, or vertices.
Sorry, that is not correct. A sphere is round like a ball and has no faces, edges, or vertices.
round and has no faces, edges, or vertices? @ Correct Feedback: Wonderful! A sphere is round like a ball and has no edges or corners.
The _____ is the flat surface of a 3-D shape.
- face
- vertex
- edge
Great job! The face is the flat surface of a 3-D shape.
Sorry, that is not correct. The flat surface of a 3-D shape is called a face. It is the part you touch on the sides when you hold a shape such as a cereal box.
Sorry, that is not correct. The flat surface of a 3-D shape is called a face. It is the part you touch on the sides when you hold a shape such as a cereal box.
The corners of 2-D and 3-D shapes are called _____
- lines
- edges
- vertices
Sorry, that is incorrect. The corners of shapes are called vertices.
Sorry, that is incorrect. The corners of shapes are called vertices.
Great job! The corners of shapes are called vertices.
How many edges does a cube have? (An edge is a line where two faces meet.)
- 8
- 12
- 6
Sorry, that is not correct. Make sure you count all around the cube. There are 4 at the top, 4 around, and 4 on the bottom. 4 + 4 + 4 = 12 edges.
Wonderful job! A cube has 12 faces.
Sorry, that is not correct. Make sure you count all around the cube. There are 4 at the top, 4 around, and 4 on the bottom. 4 + 4 + 4 = 12 edges.
What is this shape called?
- rectangular prism
- cube
- rectangle
Great job! The shape is a rectangular prism. It has 6 faces, 12 edges, and 8 vertices.
Sorry, that is incorrect. The top face of the shape is a rectangle, which makes it a rectangular prism. It has 6 faces, 12 edges, and 8 vertices.
Sorry, that is incorrect. The top face of the shape is a rectangle, which makes it a rectangular prism. It has 6 faces, 12 edges, and 8 vertices.
Which shape shown below is a triangular prism?
Sorry, that is incorrect. A triangular prism has 2 triangle faces in the front and in the back.
Sorry, that is incorrect. A triangular prism has 2 triangle faces in the front and in the back.
Wonderful job! The triangle on the front face of the shape helps identify it as a triangular prism.
How many vertices does a cylinder have?
- 0
- 2
- 3
Great job! A cylinder does not have any corners, or vertices.
Sorry, that is not correct. A cylinder does not have any corners, or vertices, because it has no straight lines that meet.
Sorry, that is not correct. A cylinder does not have any corners, or vertices, because it has no straight lines that meet.
How many faces does a triangular prism have?
- 6
- 8
- 5
Sorry, that is incorrect. A triangular prism has 5 faces, or flat surfaces. Make sure you count all the sides.
Sorry, that is incorrect. A triangular prism has 5 faces, or flat surfaces. Make sure you count all the sides.
Nice! A triangular prism has 5 faces, or flat surfaces.
How many vertices does a cone have?
- 2
- 1
- 0
Sorry, that is incorrect. A cone has one corner at the top, so it has one vertex. Remember, vertex means one corner. Vertices means more than one corner.
Correct! A cone has one vertex.
Sorry, that is incorrect. A cone has one corner at the top, so it has one vertex. Remember, vertex means one corner. Vertices means more than one corner.
A three-dimensional shape is also referred to as a _____ shape.
- vertex
- 2-D
- 3-D
Sorry, that is not correct. 3-D is another name for three-dimensional.
Sorry, that is not correct. 3-D is another name for three-dimensional.
Nice! Three-dimensional shapes are also called 3-D for short!
Summary
Questions answered correctly:
Questions answered incorrectly: