Remarks
Polygonal shapes can be classified by the number of sides. For example, quadrilaterals are polygons with four sides. Quadrilaterals can be further classified by other properties, such as the number of parallel pairs of sides (none, one pair or two pair). In the case of two pair of parallel sides, we call it a parallelogram.Note: Angles are classified by comparing them to a right angle as a benchmark.
Students should be familiar with the geometric term "diagonal."
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Item Type(s):
This benchmark may be assessed using:
MC
item(s)
- Clarification :
Students will describe, analyze, compare, and classify two-dimensional shapes using sides and angles–including acute, obtuse, and right angles. - Content Limits :
Items may include regular and irregular polygons with 3, 4, 5, 6, 8, or 10 sides.Polygons used in items may be concave or convex.
Polygons used in items may include types of triangles (right, equilateral, isosceles, and scalene), types of quadrilaterals (parallelogram, trapezoid, rectangle, rhombus, square, and/or kite), pentagons, hexagons, octagons, and decagons.
Polygons may be classified by use of parallel or perpendicular sides as well as number of sides and/or types of angles.
Items may assess the specific names of polygons with 3, 4, 5, 6, 8, or 10 sides and the following terms: regular and irregular polygons, lines and line segments (parallel and perpendicular), diagonals, and vertices (vertex).
Items will not include defining or identifying the following vocabulary terms: concave and convex.
Types of angles will not be assessed in isolation at this benchmark.
- Stimulus Attributes :
Items may be set in either a real-world or mathematical context.
Graphics should be used in most of these items, as appropriate.
- Test Item #: Sample Item 1
- Question: Andrew bought the frame shown below for his sports picture.
Which best describes the shape of the frame?
- Difficulty: N/A
- Type: MC: Multiple Choice
Related Access Points
Related Resources
Image/Photograph
Lesson Plan
Student Resources
Parent Resources
Image/Photograph
In this lesson, you will find clip art and various illustrations of polygons, circles, ellipses, star polygons, and inscribed shapes.
Type: Image/Photograph