Area: Equilateral Triangle

The video tutorial explains the properties of equilateral triangles, focusing on their equal sides and angles. It introduces the formula for calculating the area of a triangle, which is 1/2 times base times height. The tutorial demonstrates how to use a T chart to organize information and perform calculations, providing a step-by-step guide to finding the area of a triangle. Examples with different measurements are given to illustrate the process. The video concludes by emphasizing the importance of understanding the area formula.

What is the measure of each angle in an equilateral triangle?

• 45 degrees

• 60 degrees

• 120 degrees

• 90 degrees

Which formula is used to calculate the area of a triangle?

• Base plus height

• Base minus height

• 1/2 times base times height

• Base times height

In the example provided, what is the area of the equilateral triangle with a base of 4 cm and height of 3.5 cm?

• 6 cm squared

• 9 cm squared

• 7 cm squared

• 8 cm squared

What is the purpose of using a T chart in the process of finding the area of a triangle?

• To calculate the perimeter of the triangle

• To measure the sides of the triangle

• To organize the written explanation and mathematical operations

• To draw the triangle

In the second example, what is the area of the equilateral triangle with a base of 1 inch and height of 0.9 inches?

• 0.55 inches squared

• 0.45 inches squared

• 0.35 inches squared

• 0.65 inches squared