Lines of Symmetry in Polygons

The video tutorial explores the concept of symmetry in regular polygons, focusing on pentagons, hexagons, and octagons. It explains that regular polygons have equal sides and angles, and demonstrates how the number of sides in a polygon corresponds to the number of lines of symmetry. The tutorial provides a detailed examination of symmetry in each type of polygon, showing how lines of symmetry can be identified and counted.

What is a line of symmetry?

• A line that divides a shape into two identical parts

• A line that measures the perimeter of a shape

• A line that connects two vertices of a shape

• A line that is longer than any side of the shape

What defines a regular polygon?

• It has all sides and angles equal

• It has at least one right angle

• It has sides of different lengths

• It is always a triangle

What is a characteristic of a regular polygon?

• It is always a quadrilateral

• It has at least one curved side

• It has equal angles

• It has unequal sides

Which of the following is a regular polygon?

• A square

• A rectangle

• A trapezoid

• A scalene triangle

Which of the following is NOT a regular polygon?

• Regular hexagon

• Square

• Rectangle

• Equilateral triangle

How many sides does a regular pentagon have?

• Six

• Seven

• Five

• Four

How many lines of symmetry does a regular pentagon have?

• Six

• Five

• Four

• Three

What is the relationship between the number of sides and lines of symmetry in a regular hexagon?

• The number of sides is half the lines of symmetry

• The number of sides equals the lines of symmetry

• The number of sides is double the lines of symmetry

• The number of sides is unrelated to the lines of symmetry

How many lines of symmetry does a regular hexagon have?

• Seven

• Five

• Four

• Six

How many sides does a regular octagon have?

• Nine

• Eight

• Seven

• Six