Area and Perimeter of Triangles
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Objective
I can calculate the area and perimeter of triangles, including using the Pythagorean theorem to find missing side lengths when necessary.
Part 1 of 3
Warm-up video
Unknown Channel · 5:00
We don't generate video — this one is by Unknown Channel on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.
Part 2 of 3
Practice
2 questions
A triangle has a base of 10 cm and a height of 7 cm. Calculate the area of the triangle. If each side is doubled, what is the new area?
The perimeter of an equilateral triangle is 36 inches. What is the length of each side? What is the area of the triangle if the height is approximately 10.4 inches?
Part 3 of 3
Exit ticket
Quick comprehension check
“A right triangle has a base of 8 cm and a hypotenuse of 17 cm. Find the perimeter and area of the triangle. Show all work. An isosceles triangle has two sides that are each 13 inches long and a base of 10 inches. Find the area of the triangle. (Hint: You will need to find the height). Show all work. ”
Sample answer included in the free materials
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Teacher Guide
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