Classifying Shapes into Sets and Subsets

What does Asher's diagram show?

• All quadrilaterals are trapezoids

• All trapezoids are quadrilaterals.

• All trapezoids are parallelograms.

• All squares are trapezoids.

Roberto created the graphic organizer below to classify two-dimensional figures. What figure always belongs in the shaded area?

• Trapezoids

• Hexagons

• Rhombuses

• Squares

What type of triangles always belong in the shaded part of the diagram?

• Scalene Triangles

• Isosceles Triangles.

• Right Triangles

• Equilateral Triangles

Megan sorted shapes given by her teacher into the graphic organizer below. Which shapes are classified correctly?

• Shapes 1 and 2

• Shapes 3 and 4

• Shapes 1, 2, 3, and 4

• Shapes 2, 3, and 4

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

What should be written in the empty box to best complete the organizer?

• Equilateral

• Polygon

• Rhombus

• Triangle

Which diagram shows a set and subset that is correct?

• A

• B

• C

• D

Which diagram shows a set and subset that is NOT correct?

• A

• B

• C

• D

What is the best way to classify the triangle that belongs in the shaded section of this Venn diagram?

• Equilateral right triangle

• 
  Scalene obtuse triangle

• Isosceles right triangle

• Isosceles acute triangle

Which shapes are NOT classified correctly?

• 1 and 4

• 2 and 5

• 4 and 5

• 2 and 3