Polygon Symmetry
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Objective
I can identify lines of symmetry in different shapes.
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
Draw a regular heptagon (7 sides). How many lines of symmetry does it have? Explain your reasoning.
Imagine a regular decagon (10 sides). Without drawing it, predict how many lines of symmetry it would have. Explain your reasoning based on the patterns you observed in the video.
Part 3 of 3
Exit ticket
Quick comprehension check
“How many lines of symmetry does a regular octagon have? How many lines of symmetry does an equilateral triangle have? How many lines of symmetry does a regular pentagon have?”
Sample answer included in the free materials
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Teacher guide, student handout, and slides — free, in Google Docs format
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