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# MAFS.912.G-GMD.2.4

Identify the shapes of two-dimensional cross-sections of three-dimensional objects, and identify three-dimensional objects generated by rotations of two-dimensional objects.
Subject Area: Mathematics
Domain-Subdomain: Geometry: Geometric Measurement & Dimension
Cluster: Level 2: Basic Application of Skills & Concepts
Cluster: Visualize relationships between two-dimensional and three-dimensional objects. (Geometry - Additional Cluster) -

Clusters should not be sorted from Major to Supporting and then taught in that order. To do so would strip the coherence of the mathematical ideas and miss the opportunity to enhance the major work of the grade with the supporting clusters.

Date of Last Rating: 02/14
Status: State Board Approved
Assessed: Yes

### TEST ITEM SPECIFICATIONS

• Item Type(s): This benchmark may be assessed using: MC item(s)

• Assessment Limits :
Items may include vertical, horizontal, or other cross-sections.

Items may include more than one three-dimensional shape.

• Calculator :

Neutral

• Clarification :
Students will identify the shape of a two-dimensional cross-section of
a three-dimensional object.

Students will identify a three-dimensional object generated by a
rotation of a two-dimensional object

• Stimulus Attributes :
Items may be set in a real-world or mathematical context.

A verbal description of a cross-section or a three-dimensional shape
may be used.

• Response Attributes :
Items may require the student to draw a line that shows the location
of a cross-section.

### SAMPLE TEST ITEMS (1)

• Test Item #: Sample Item 1
• Question:

A rectangle and a horizontal line segment are shown.

What is the resulting object when the rectangle is rotated about the horizontal line segment?

• Difficulty: N/A
• Type: MC: Multiple Choice