Triangle Area and Base Selection

The video tutorial focuses on applying the formula for the area of triangles. It begins with an introduction to the activity, followed by instructions on how to find the area of triangles using the base and height. An example calculation is demonstrated with triangle A. The video discusses the importance of correctly identifying the base and height, and analyzes the measurements of triangles C, D, and E. It concludes with a discussion on the unique properties of right triangles.

What is the formula for calculating the area of a triangle?

• Base plus height divided by two

• Base plus height

• Base times height

• Base times height divided by two

What should you do before returning to the video?

• Find the area of one triangle

• Find the area of three triangles

• Watch the video again

• Discuss with a partner

In the example, what are the base and height of triangle A?

• 6 cm and 5 cm

• 5 cm and 6 cm

• 3 cm and 7 cm

• 7 cm and 3 cm

Why can't the height be used as the base in triangle A?

• The height is not given

• The height is not perpendicular

• The height is too short

• The height is not a side of the triangle

Why is the 3 cm piece not suitable as a base for triangle C?

• It is too short

• It is not given

• It is not a side of the triangle

• It is not perpendicular

What makes right triangles like B and D unique?

• They have equal sides

• They have no base

• They have a 90-degree angle

• They have no height

Which measurement is not helpful for finding the area of triangle C?

• 7 cm

• 6 cm

• 3 cm

• 3.5 cm

What should you consider when choosing the base of a triangle?

• The base should be the shortest side

• The base should be perpendicular

• The base should be a side of the triangle

• The base should be the longest side

Why is it important to know the corresponding height when choosing a base?

• To accurately calculate the area

• To ensure the base is the longest side

• To ensure the base is the shortest side

• To calculate the perimeter

What should you do if your area calculation does not make sense?

• Change the base and height

• Recalculate using a different formula

• Check if the formula was followed correctly

• Ignore the result