Finding the Perimeter of Polygons

The video tutorial introduces the concept of perimeter, explaining it as the distance around a shape. It focuses on polygons, particularly squares and rectangles, and demonstrates how to calculate their perimeters. The video also distinguishes between perimeter and area, emphasizing their differences. Practical applications are shown through a cornfield example, where the perimeter is used to determine the number of fence pieces needed. The tutorial concludes with options for further engagement.

What does perimeter refer to in mathematics?

• The length of one side of a shape

• The distance around a shape

• The area inside a shape

• The number of sides a shape has

Why is it important to know the perimeter when building a fence?

• To know how many fence pieces to buy

• To calculate the area inside the fence

• To decide the shape of the fence

• To determine the height of the fence needed

What is a polygon?

• A three-dimensional object

• A shape with curved sides

• A closed shape with straight sides

• An open shape with any number of sides

How do you calculate the perimeter of a rectangle?

• Divide the area by the number of sides

• Multiply all sides by two

• Add the length of all sides

• Multiply the length by the width

What unit is perimeter measured in?

• Square units

• No units

• Cubic units

• Linear units

What is the difference between perimeter and area?

• Area is measured in linear units, and perimeter in square units

• There is no difference

• Perimeter is the inside space, and area is the outside distance

• Perimeter is the outside distance, and area is the inside space

How can you find the perimeter of a square if you know one side?

• Divide the side by four

• Add the side to itself

• Multiply the side by two

• Multiply the side by four

When can multiplication be used to find the perimeter of a polygon?

• When all sides are of the same length

• Only for triangles

• When all sides are of different lengths

• Never, addition is always used

How do you find the perimeter of a rectangle when given only two adjacent sides?

• Add the given sides

• Subtract the given sides

• Use the given sides to find the missing sides, then add all sides

• Multiply the given sides

How many fence pieces are needed for the cornfield?

• 12 pieces

• 16 pieces

• 10 pieces

• 14 pieces