Finding Quadrilateral Side Lengths
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Objective
I can use addition and subtraction to determine the length of an unknown side of a quadrilateral when given the perimeter and the lengths of the other three sides.
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
7 questions
What does "perimeter" mean? Explain it in your own words.
A quadrilateral has sides of 3 cm, 7 cm, and 5 cm. If the perimeter is 20 cm, what is the length of the missing side? Show your work.
Part 3 of 3
Exit ticket
Quick comprehension check
“A quadrilateral has a perimeter of 30 cm. Three of its sides are 6 cm, 8 cm, and 7 cm long. What is the length of the missing side? The perimeter of a quadrilateral is 45 meters. If three of its sides measure 10 meters, 12 meters, and 15 meters, what is the length of the fourth side? A quadrilateral has sides of 5 inches, 9 inches, and 11 inches. If the perimeter is 32 inches, what is the length of the missing side?”
Sample answer included in the free materials
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Teacher Guide
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