Classifying 2 Dimensional Polygons

This graphic organizer shows one way to classify triangles. Which type of triangles always belongs in the shaded section of the organizer?

• Scalene triangles

• Right triangles

• Isosceles triangles

• Equilateral triangles

In the Venn diagram shown, Set A contains shapes with one given characteristic and Set B contains shapes with another characteristic. The diagram indicates that Set A includes polygons with at least one right angle. Which shape most likely belongs in the intersection of Set A and Set B?

• Rectangle

• Right Triangle

• Irregular Pentagon

• Parallelogram

A student used this graphic organizer to classify different figures. Refer to the diagram showing a set of triangles labeled from Figure I to Figure V. Which figures belong in the part of the organizer labeled "Isosceles triangles"?

• Figures II and V only

• Figures I, III, and V only

• Figures I and III only

• Figures II, IV, and V only

Which list shows all of the ways this triangle could be classified?

• Acute only

• Equilateral only

• Acute and isosceles only

• Acute, isosceles, and equilateral only

Nathan built the hanging mobile shown in the diagram to show some relationships among shapes. Which shape goes in the empty box in order to complete Nathan's mobile?

• Trapezoid

• Quadrilateral

• Rhombus

• Triangle

Which shapes appear to be classified correctly?

• Shapes 1 and 3 only

• Shapes 2 and 4

• Shapes 1, 2, and 3

• Shapes 1, 3, and 4

Which shape is NOT sorted correctly in the graphic organizer?

• Circle

• Pentagon

• Quadrilateral

• Triangle

The graphic organizer shown can be used to classify triangles. Which triangle can be classified as scalene?

• F

• G

• H

• J

This Venn diagram shows the relationship between some types of triangles. Which triangle belongs in the intersection of "Acute triangles" and "Isosceles triangles"?

• Triangle F

• Triangle G

• Triangle H

• Triangle J

Quadrilaterals can be classified using the graphic organizer shown. Which term best classifies the shapes that belong in the shaded section of the organizer?

• A) Parallelogram

• B) Polygon

• C) Pentagon

• D) None of these