Calculating Perimeter and Missing Sides

The video tutorial explains how to determine the perimeter of a polygon by adding the lengths of all its sides. It addresses the challenge of missing side lengths by using given information to calculate them. The tutorial demonstrates the process of finding these lengths and then summing them to find the total perimeter, providing a step-by-step guide to ensure accuracy.

What is the first step in determining the perimeter of a polygon?

• Subtract the lengths of all sides

• Add the lengths of all sides

• Multiply the lengths of all sides

• Divide the lengths of all sides

If a side length is missing, what can be used to find it?

• The length of the opposite side

• The area of the polygon

• The perimeter of the polygon

• The height of the polygon

How do you calculate the length of a missing side if the total length is 9.8 and a known segment is 3.2?

• Add 3.2 to 9.8

• Subtract 3.2 from 9.8

• Multiply 3.2 by 9.8

• Divide 9.8 by 3.2

What is the length of the first missing side calculated in the video?

• 5.6 cm

• 8.6 cm

• 6.6 cm

• 7.6 cm

What is the process to find the second missing side length?

• Add the known side to the total length

• Divide the total length by the known side

• Multiply the known side by the total length

• Subtract the known side from the total length

What is the length of the second missing side calculated in the video?

• 8.8 cm

• 9.8 cm

• 11.8 cm

• 10.8 cm

What is the final step in determining the perimeter of the polygon?

• Divide all side lengths

• Add all side lengths

• Multiply all side lengths

• Subtract all side lengths

What is the perimeter of the polygon as calculated in the video?

• 42.6 cm

• 43.6 cm

• 44.6 cm

• 45.6 cm

Which of the following is NOT a step in calculating the perimeter of a polygon?

• Identifying missing side lengths

• Subtracting known segments from total lengths

• Adding all side lengths

• Multiplying all side lengths

Why is it necessary to bring the decimal point down during subtraction?

• To maintain the correct place value

• To ensure the result is a whole number

• To convert the result to centimeters

• To make the calculation easier