Triangle Perimeter and Expressions

The video tutorial explains how to find the perimeter of a triangle by adding the lengths of its sides. It starts by introducing the concept of perimeter and then calculates the lengths of each side of a triangle. The tutorial proceeds to simplify the expression by combining like terms, resulting in the final expression for the perimeter. The solution is verified by matching it with the given choices.

What is the first step in solving the problem of finding the perimeter of a triangle?

• Examining the triangle and determining the expression for its perimeter

• Finding the angles of the triangle

• Calculating the area of the triangle

• Identifying the type of triangle

Which formula is used to find the perimeter of a triangle?

• 2 times the base plus height

• Base times height divided by 2

• Sum of all three sides

• Length times width

What is the length of the first side of the triangle?

• 3X + 4

• 4X + 1

• 2X + 7

• X + 5

What is the expression for the second side of the triangle?

• 3X + 4

• X + 5

• 2X + 7

• 4X + 1

What is the length of the third side of the triangle?

• 3X + 4

• 2X + 7

• X + 5

• 4X + 1

How do you form the expression for the perimeter of the triangle?

• Multiply the lengths of the sides

• Add the lengths of the sides

• Subtract the lengths of the sides

• Divide the lengths of the sides

What is the total expression for the perimeter before simplification?

• X + 5 + 4X + 1

• 2X + 7 + 4X + 1

• X + 5 + 2X + 7

• X + 5 + 2X + 7 + 4X + 1

What is the total number of terms in the expression before simplification?

• 5

• 9

• 3

• 7

How many X terms are there in the expression before simplification?

• 5

• 7

• 9

• 3

What is the simplified expression for the X terms in the perimeter?

• 7X

• 8X

• 6X

• 5X