Area of a Triangle

Area of a Triangle

Let's do this....😎

• Grab a A4 sheet or any paper

• Measure the height and breadth of the paper

• Find the area of the paper using any measurement tool

Can you convert this rectangle into a triangle???

Look at this picture..

• Can you now figure out two triangles?

• How do you think we can find the area of the triangle?

We can divide the rectangle into

two halves

to find the area of a triangle.

Today's Goals

• Identify the base and height of the triangle

• Understand the basic formula to find the area of a triangle

• Apply these techniques in the context of solving real-world and mathematical problems.

• Create a triangle and find its area

Points to remember:

• Base means bottom

• The height of any object is how much it measures from its top to its bottom.

• And make sure the height is a perpendicular line...!

Multiple Choice

What is the height of the given triangle?

• 21 mm

• 66 mm

• 33 mm

Multiple Choice

Identify the height.

• 24 in

• 25 in

• 7 in

Area of a triangle =  $\frac{b\times h}{2}$  

Open Ended

Write the formula to find the area of a triangle.

Multiple Choice

Find the area of the triangle.

• 30 cm²

• 35 cm²

• 25 cm²

Multiple Choice

Salma bought the Almarai Cheese from LuLu Supermarket. She observes that the height of the triangle cheese is 6cm and base 4cm. Help Salma to find the area of the cheese.

• 13 cm²

• 12 cm²

• 10 cm²

Poll

How confident are you with today's lesson?