15 · Circles and Polygons [CP3] — printable QR sheet

7 stations, one per page. Print (portrait), post one at each station. Talk-it-through problems take any real attempt for credit; timed problems gate hint 2 at 30 s and Reveal at 60 s past that.

Printer tip: Ctrl/Cmd-P → portrait → “Background graphics” on if you want the flavor colors.

Station 1 of 7

15.1 — Midpoints, Slopes & Systems of Equations

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QR for station 1
Station code 41e220aa students can type this at the front page instead of scanning
https://geo-stations.mrritchey.com/41e220aa/
Scan → work it on the whiteboard → type the answer → show the summary screen.
Station 2 of 7

15.2 — Points of Concurrency

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QR for station 2
Station code 1e4232a0 students can type this at the front page instead of scanning
https://geo-stations.mrritchey.com/1e4232a0/
Scan → work it on the whiteboard → type the answer → show the summary screen.
Station 3 of 7

15.3 — Centroids

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QR for station 3
Station code c5a1eb6b students can type this at the front page instead of scanning
https://geo-stations.mrritchey.com/c5a1eb6b/
Scan → work it on the whiteboard → type the answer → show the summary screen.
Station 4 of 7

15.4 — Arc Length

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QR for station 4
Station code 8d995cab students can type this at the front page instead of scanning
https://geo-stations.mrritchey.com/8d995cab/
Scan → work it on the whiteboard → type the answer → show the summary screen.
Station 5 of 7

15.5 — Circumcenter

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QR for station 5
Station code 622d52dd students can type this at the front page instead of scanning
https://geo-stations.mrritchey.com/622d52dd/
Scan → work it on the whiteboard → type the answer → show the summary screen.
Station 6 of 7

15.6 — Constructions

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QR for station 6
Station code 17bda151 students can type this at the front page instead of scanning
https://geo-stations.mrritchey.com/17bda151/
Scan → work it on the whiteboard → type the answer → show the summary screen.
Station 7 of 7

— Review (T15)

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QR for station 7
Station code 88d4ae18 students can type this at the front page instead of scanning
https://geo-stations.mrritchey.com/88d4ae18/
Scan → work it on the whiteboard → type the answer → show the summary screen.