Finding Missing Sides in Geometry

The video tutorial explains how to find missing side lengths of shapes when given the perimeter or area. It covers two methods for calculating missing sides using the perimeter: the formula method and an alternative method. Additionally, it demonstrates how to find a missing side using the area by dividing the area by a known side. The tutorial includes examples for each method, providing a clear understanding of the concepts.

What is the main focus of the video tutorial?

• Learning about different types of triangles

• Finding missing side lengths using perimeter and area

• Calculating the volume of shapes

• Understanding angles in geometry

What does the term 'perimeter' refer to?

• The number of sides a shape has

• The total length around a shape

• The length of the longest side

• The area inside a shape

Which formula is used to calculate the perimeter of a rectangle?

• Length x Width

• 2 x (Length + Width)

• Length + Width

• Length x Width x Height

In the example, if one side of the rectangle is 20, what is the other side if the perimeter is 54?

• 10

• 7

• 14

• 20

What is the first step in the alternative method for finding a missing side using perimeter?

• Add the known side to the perimeter

• Divide the perimeter by 2

• Subtract the known side from the perimeter

• Multiply the perimeter by 2

In the alternative method, what do you do after dividing the perimeter by 2?

• Subtract the known side

• Divide by the known side

• Multiply by the known side

• Add the known side

In the second perimeter example, what is the missing side if the perimeter is 42 and one side is 9?

• 10

• 15

• 9

• 12

What is the first step in finding a missing side using area?

• Subtract the known side from the area

• Multiply the area by the known side

• Add the known side to the area

• Divide the area by the known side

If the area is 28 and one side is 4, what is the missing side?

• 5

• 8

• 6

• 7

How many groups of 25 are in 200 when finding a missing side using area?

• 6

• 9

• 7

• 8