Area of Triangles and Parallelograms
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Objective
I can solve problems involving the area of triangles and parallelograms.
Part 1 of 3
Key concepts
3 concepts
- 1
A parallelogram is a quadrilateral with two pairs of parallel sides, and its area is calculated by multiplying its base by its corresponding height.
- 2
The area of a triangle is half the area of a parallelogram that shares the same base and height, leading to the formula A = (1/2)bh.
- 3
For both parallelograms and triangles, the height 'h' must always be the perpendicular distance between the chosen base and the opposite side or vertex.
Part 2 of 3
Practice
7 questions
What is the formula for calculating the area of a parallelogram, and what do the variables 'b' and 'h' represent in this formula?
Explain how the area of a triangle is related to the area of a parallelogram that shares the same base and height.
Part 3 of 3
Exit ticket
Quick comprehension check
“Calculate the area of a parallelogram with a base of 15 cm and a height of 8 cm. Then, calculate the area of a triangle with a base of 12 m and a height of 7 m. Show your work for both calculations.”
Sample answer included in the free materials
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Teacher Guide
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