How to determine the area for a triangle

The video tutorial focuses on the importance of selecting the correct base when calculating the area of a triangle. It provides an example to illustrate why certain sides should not be used as the base and explains the process of calculating the area using the formula 1/2 base times height. The tutorial also addresses common errors in calculations and emphasizes the need for accuracy.

What is the formula used to calculate the area of the triangle?

What mistake is pointed out regarding the calculation of the area?