Examples with solutions for Area of a Triangle: Using congruence and similarity

Exercise #1

The parallelogram ABCD is shown below.

Diagonal BD = 13

Side DB is perpendicular to side EC.

EC = 4

Calculate the area of the parallelogram ABCD.

131313444AAABBBCCCDDDEEE

Video Solution

Answer

52 cm²

Exercise #2

Given the following shape, calculate the area

αααααα777777222AAABBBCCCDDDEEE

Video Solution

Answer

65 6\sqrt{5} cm².

Exercise #3

What is the area of the triangle ADE?

888121212333AAABBBCCCDDDEEE

Video Solution

Answer

945 \frac{9}{4}\sqrt{5} cm²..