Classifying 2D Shapes

What quadrilateral has 4 angles that are 90 degrees and 4 sides of equal lengths?

• Parallelogram

• Rectangle

• Trapezoid

• Square

Which one is not a quadrilateral?

• Trapezoid
• Pentagon
• Parallelogram
• Rhombus

Which quadrilateral has only one set of parallel lines?

• Trapezoid
• Parallelogram
• Square
• Rhombus

Which quadrilateral has opposite angles that are equal and 4 sides that equal in length?

• Rhombus
• Rectangle
• Parallelogram
• Trapezoid

What type of triangle has angles that are all less that 90 degrees?

• Right Triangle
• Obtuse Triangle
• Scalene Triangle
• Acute Triangle

A triangle has sides that measure 10 in, 10 in, and 8 in. What type of triangle is it?

• Scalene Triangle
• Isosceles Triangle
• Right Triangle
• Equilateral Triangle

What type of triangle has all equal sides and all angles less than 90 degrees?

•  Acute Equilateral Triangle
• Right Isosceles Triangle
• Right Scalene Triangle
• Obtuse Isosceles Triangle

What type of triangle has one right angle?

• Acute Triangle
• Scalene Triangle
• Right Triangle
• Obtuse Triangle

What shape is shown?

• Regular Convex Decagon
• Irregular Convex Octagon
• Irregular Concave Decagon
• Regular Concave Nonagon

What shape is shown?

• Regular Convex Pentagon
• Irregular Convex Pentagon
• Irregular Concave Pentagon
• Regular Concave Pentagon