Area of a Triangle: Using congruence and similarity

Ascertaining whether or not there are errors in the data Calculating in two ways Worded problems Subtraction or addition to a larger shape How many times does the shape fit inside of another shape?Using Pythagoras' theorem Using ratios for calculation Using additional geometric shapes Using variables Finding Area based off Perimeter and Vice Versa Calculate The Missing Side based on the formula Applying the formula

Question 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.

Question 2

Given the following shape, calculate the area

Question 3

What is the area of the triangle ADE?

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.

Video Solution

Answer

52 cm²

Exercise #2

Given the following shape, calculate the area

Video Solution

Answer

$6\sqrt{5}$ cm².

Exercise #3

What is the area of the triangle ADE?

Video Solution

Answer

$\frac{9}{4}\sqrt{5}$ cm²..