Calculating Area of Shapes
Grade 9th Grade · 45 min
What's Included
Learning Objective
I can calculate the area of various two-dimensional shapes, including triangles, quadrilaterals, and circles.
Warm-Up Video
Kayla Jones · 4:19
Area of Shapes
Guided Notes
3 key concepts
- 1
The area of a triangle can be found using the formula ½ * base * height, where the height is the perpendicular distance from the base to the opposite vertex.
- 2
The area of a parallelogram is calculated by multiplying the base by the height, ensuring the height is measured straight up and down, not along the slant.
- 3
The area of a trapezoid is found using the formula ½ * (base1 + base2) * height, where base1 and base2 are the lengths of the parallel sides and the height is the perpendicular distance between them.
Practice Questions
10 questions · Multiple choice & Short answer
Exit Ticket
Quick comprehension check
“Find the area of a trapezoid with base 1 = 4 inches, base 2 = 10 inches, and height = 3 inches. Show your work.”
Complete Lesson Package
Get all 3 ready-to-use resources:
