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Rotation via Double Reflection
An interactive web app that shows how any geometric transformation can be built by composing reflections
verified Aug 24, 2026 · HTTP 200
CohortClass of 2026What it is
An interactive web app that shows how any geometric transformation can be built by composing reflections. Users can manipulate reflections to see rotations, scaling, and translation in real time, deepening intuition about geometric algebra.
HTTP liveness
1 probe since Aug 24Aug 24Aug 24
AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)
Observed events
probes · press · GitHub- Aug 24, 2026First probe — liveAlive · 200 OK
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Pulse Indexobserved activity
1 probe0 pressGitHub –Tranco –
Not enough observed signals for a Pulse Index (needs 2+ signal families).
Cohort survival · Class of 2026weekly
3,100 products launched in 2026 · 100% still active
3,100 active0 sunset
Still active
100%
Median lifespan
4.9y