NC.M3.G-GMD.4 Re-Test Lesson

NC.M3.G-GMD.4

Instructions:

Earn an 80% or higher on this lesson to be able to re-attempt the questions that you missed tied to this standard from our Unit 3 Test.

What is a cross section?

a surface or shape that is or would be exposed by making a straight cut through something

If the cut is parallel to the base, the resulting cross section will be the same shape as the base.

The shapes to the right are all being cut parallel to the base.

Parallel to the Base

Direction of the Cross Section

If the cut is perpendicular to the base, the resulting cross section will be the same shape as the face.

The shapes to the left are all being cut perpendicular to the base(s).

Perpendicular to the Base

Direction of the Cross Section

Multiple Choice

What shape will the horizontal (parallel) cross-section of a cone be?

• Dome
• Circle
• Pyramid
• Triangle

Multiple Choice

What shape will the vertical (perpendicular) cross -section of a cylinder be?

• Circle
• Triangle
• Rectangle
• Ellipse

Multiple Choice

What shape will the vertical (perpendicular) cross-section of a cube be?

• Square
• Triangle
• Trapezoid
• Circle

Multiple Choice

A triangular prism is shown What shape does this cross section perpendicular to the base make?

• Rectangle
• Circle
• Triangle
• Square

Multiple Choice

Describe the cross section of this triangular pyramid cut p

• triangle

• rectangle

• trapezoid

• square

Multiple Choice

A triangular prism is shown. What shape does this perpendicular-to-base cross section make?

• Rectangle

• Circle

• Triangle

• Square

Rotating other 2d shapes about an axis

• a triangle rotated about an axis on its side creates a cone

• a rectangle rotated about an axis on its side creates a cone

• a circle rotated about an axis on its diameter creates a sphere

Multiple Choice

An isosceles right triangle is placed on a coordinate grid. One of its legs is on the x-axis and the other on the y-axis. Which describes the shape created when the triangle is rotated about the 𝑥−𝑎𝑥𝑖𝑠?

• cone

• cylinder

• pyramid

• sphere

Multiple Choice

A rectangle will be rotated 360° about a line which contains the point of intersection of its diagonals and is parallel to a side. What three-dimensional shape will be created as a result of the rotation?

• cube

• rectangular prism

• cylinder

• sphere

Multiple Choice

If the rectangle below is continuously rotated about side w, which solid figure is formed?

• pyramid

• rectangular prism

• cone

• cylinder