Understanding Polygons

The video tutorial explains polygons as closed figures with three or more straight sides. It categorizes polygons based on the number of sides, such as triangles, quadrilaterals, pentagons, and so on, up to decagons. The tutorial also distinguishes between regular polygons, which have congruent sides and angles, and irregular polygons, which do not. Examples of both regular and irregular polygons are provided for better understanding.

What is a defining characteristic of a polygon?

• It is an open figure.

• It has three or more straight sides.

• It has exactly two sides.

• It has curved sides.

Which of the following is NOT a polygon?

• A shape with six straight sides.

• A shape with four straight sides.

• A shape with one open side.

• A shape with three straight sides.

What is a four-sided polygon called?

• Triangle

• Quadrilateral

• Hexagon

• Pentagon

How many sides does a hexagon have?

• Eight

• Seven

• Six

• Five

What is the name of a seven-sided polygon?

• Decagon

• Nonagon

• Octagon

• Heptagon

Which polygon has eight sides?

• Heptagon

• Hexagon

• Octagon

• Nonagon

What is a regular polygon?

• A polygon with no angles.

• A polygon with curved sides.

• A polygon with all sides different.

• A polygon with all sides and angles equal.

Which of the following is an example of an irregular polygon?

• A quadrilateral with two sides longer than the others.

• A hexagon with all angles equal.

• A triangle with all sides equal.

• A pentagon with all sides equal.

What distinguishes a regular triangle from an irregular triangle?

• A regular triangle has more than three sides.

• A regular triangle has curved sides.

• A regular triangle has no equal sides.

• A regular triangle has all sides and angles equal.

Which of the following is true about irregular polygons?

• They have congruent sides and angles.

• They have curved sides.

• They have at least one side or angle that is different.

• They are always open figures.