Exploring Polygons and Triangles

What is the name of a polygon with 5 sides?

• Triangle

• Pentagon

• Hexagon

• Octagon

How many degrees are in a right angle?

Which of the following is an obtuse angle?

A triangle with all sides equal is called a:

• Scalene triangle

• Isosceles triangle

• Equilateral triangle

• Right triangle

How many sides does a regular octagon have?

• 6

• 7

• 8

• 9

Which of the following is a polygon?

• Circle

• Rectangle

• Ellipse

• Sphere

Which triangle has exactly one right angle?

• Equilateral triangle

• Isosceles triangle

• Right triangle

• Scalene triangle

• Right triangle

• Obtuse triangle

• Acute triangle

• Equilateral triangle

Which of the following polygons is a quadrilateral?

• Triangle

• Pentagon

• Hexagon

• Parallelogram

A triangle has side lengths of 5 cm, 5 cm, and 8 cm. How would you classify this triangle by its sides?

• Scalene

• Isosceles

• Equilateral

• Right