How to determine the measure of an isosceles triangle ex 11

The video tutorial explains how to find the measures of the sides of a triangle by setting up and solving an equation. It begins by identifying equal sides and setting up an equation with a variable X. The tutorial then demonstrates solving the equation to find the value of X and uses this value to calculate the lengths of the triangle's sides. The process concludes with a summary of the steps taken to determine the missing side lengths.

What is the relationship between the two equal sides of the triangle?

• They are both longer than the base.

• They are both perpendicular to the base.

• They are both equal in length.

• They are both parallel to each other.

What equation is set up to find the value of X?

• X - 7 = 2X - 21

• X + 7 = 4X + 21

• 2X + 7 = 4X + 21

• 2X - 7 = 4X - 21

What is the value of X after solving the equation?

• 7

• 8

• 6

• 5

What is the length of side BC?

• 5

• 4

• 7

• 6

What is the length of side AC?

• 3

• 4

• 5

• 6