Calculating the Area of a Triangle

This video tutorial explains how to find the area of a triangle using the formula A = 1/2 * base * height. It covers how to identify the base and height of a triangle, especially in right triangles, and provides a detailed example calculation. The tutorial emphasizes the importance of using vertical height and concludes with a calculation of the area in square meters.

What does the variable 'A' represent in the area formula?

• Arc length of the triangle

• Area of the triangle

• Angle of the triangle

• Altitude of the triangle

In the formula for the area of a triangle, what operation is performed first?

• Multiplication by the height

• Division by 2

• Addition of base and height

• Subtraction of the base from the height

What is the formula for the area of a triangle?

• A = 2 * b + h

• A = 1/2 * b * h

• A = b * h

• A = b + h

How is the height of a triangle determined?

• The longest side of the triangle

• The vertical distance from the base to the top

• The side opposite the right angle

• The perimeter divided by three

What is the first step in finding the area of a triangle?

• Drawing the triangle

• Identifying the base and height

• Calculating the perimeter

• Measuring the angles

What must be true about the height in relation to the base of the triangle?

• It can be any angle to the base

• It must be parallel to the base

• It must be longer than the base

• It must be perpendicular to the base

In a triangle, how is the base usually selected?

• The top side of the triangle

• The side opposite the right angle

• The bottom side of the triangle

• The shortest side of the triangle

For a right triangle with a base of 10 meters and a height of 4 meters, what is the area?

• 5 square meters

• 40 square meters

• 20 square meters

• 14 square meters

Which unit is used to express the area of a triangle?

• Kilograms

• Square units

• Linear meters

• Cubic units

Why is the area of a triangle expressed in square units?

• Because it is a standard convention

• Because it measures surface area

• Because it measures length

• Because it measures volume