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, which in this example is 20 centimeters. The lesson concludes by reinforcing the method of measuring perimeter on a grid.

What is the perimeter of a plane figure?

• The volume of the figure

• The number of angles in 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

• Celsius, Fahrenheit, and Kelvin

• Kilograms, grams, and pounds

• Liters, gallons, and pints

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

• By counting the number of unit squares along the side

• By estimating visually

• By measuring the diagonal

• By using a protractor

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

• 4 centimeters

• 3 centimeters

• 2 centimeters

• 1 centimeter

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

• 25 centimeters

• 20 centimeters

• 18 centimeters

• 15 centimeters