Finding the Area of a Triangle

This video tutorial explains how to calculate the area of a triangle using its base and vertical height. It introduces the basic formula, demonstrates its application with examples, and explains why the formula works by relating it to the area of a parallelogram. The video also includes practice questions for viewers to test their understanding.

What is the formula for calculating the area of a triangle when given the base and vertical height?

• Base minus height

• Base plus height

• Base times height divided by two

• Base times height

In the example provided, what is the area of a triangle with a base of 11 cm and a height of 5 cm?

• 27.5 cm²

• 16 cm²

• 55 cm²

• 22 cm²

Why is it important to include squared units when calculating the area of a triangle?

• To simplify the calculation

• To make the number larger

• To indicate the measurement is in two dimensions

• To match the units of the base

How does duplicating a triangle help in understanding the area formula?

• It forms a rectangle

• It forms a square

• It forms a circle

• It forms a parallelogram

In the second example, why can the 1/3 length of 9 meters be ignored?

• It is not part of the triangle

• It is not a whole number

• It is too small to consider

• It is not the base or the perpendicular height