Measuring the Perimeter of Plane Figures Using a Grid

The video tutorial explains how to measure the perimeter of a plane figure using a grid. It begins by defining the perimeter as the total length of a figure's sides, measured in units like meters or inches. The tutorial then demonstrates how to use a square centimeter grid to determine the length of each side of a figure. By counting the unit squares along each side, the lengths are found and added together to calculate the perimeter. The example provided results in a perimeter of 20 centimeters. The lesson concludes by reinforcing the method of measuring perimeter using a grid.

What is the perimeter of a plane figure?

• The number of angles in the figure

• The volume of the figure

• The total length of its sides

• The area of the figure

Which units are commonly used to measure perimeter?

• Meters, inches, and feet

• Kilograms, grams, and pounds

• Liters, gallons, and pints

• Celsius, Fahrenheit, and Kelvin

How can you find the length of a side on a grid?

• By measuring the diagonal

• By estimating visually

• By using a protractor

• By counting the number of unit squares along the side

If a side of a figure on a grid is 3 square centimeters long, what is its length in centimeters?

• 4 centimeters

• 1 centimeter

• 2 centimeters

• 3 centimeters

What is the total perimeter of the figure discussed in the lesson?

• 25 centimeters

• 20 centimeters

• 18 centimeters

• 15 centimeters