# Area of a Triangle

Topic:
Area

1. ﻿Identify the height and base of rectangle AEFB? 2. How do you  calculate the area of a rectangle? 3. Calculate is the area of a rectangle AEFB.

## Point C should be on the segment between points E and F, to form ∆ACB. ∆ACB is known as an acute triangle.

Please type your answers in the space below.﻿ 1. What is the definition of an acute triangle? 2. Is the height of acute ∆ACB located Inside the triangle or outside the triangle? 3. Calculate the area ofACB?  4. What conclusion can you make about the area of rectangle AEFB and ACB?

## Place point C right on top of point F to make ∆ACB a right triangle.

Please type your answers in space below. ﻿ 1. What is the definition of a right triangle? 2. Is the height of right ∆ACB located inside the triangle or outside the triangle? 3. Calculate the area of ACB? 4. What conclusion can you make about the area of rectangle AEFB and ACB?

## Place point C two spaces to the left of point F (point C is no longer be on segment EF), to make ∆ACB an obtuse triangle.

Please type your answers in the space below. ﻿ 1. What is the definition of an obtuse triangle? 2. Is the height of obtuse ∆ACB located inside the triangle or outside the triangle? 3. Calculate the area of ∆ACB? 4. What conclusion can you make about the area of rectangle AEFB and ∆ACB?

1. How would you describe the height of the triangle? 2. Write the rule to find the area of a rectangle and the rule to find the area of a triangle