Recorded answers
251 recorded answers
How to approach it
Treat the prompt as a vocabulary retrieval task rather than a definition task. Begin by listing the words a school syllabus attaches to drawn figures, then push into the terminology used by competitive mathematics and specialist reference works, where nearly every classical configuration has been given its own label. Read the judging rules carefully: the target is a component of a figure, so whole-figure names, measurements expressed as formulas, and playful inventions all fall outside. From your list, keep the entries you can defend in one clause — a label a textbook would print beside a diagram. Rank what remains by how unusual it is, because the scoring rewards the deepest cut of the specialist glossary over the half-dozen words every solver will produce. Submit the rarest term you can define correctly.
Get a hint
Geometry keeps a separate vocabulary for the anatomy of figures — the labels printed next to a diagram, not the names of the figures themselves. Start with whatever a school textbook circles in ink.
A little more
Widen past the obvious: the vocabulary runs from simple measurable features of circles and solids to the elaborate named points and reference lines that specialist literature attaches to a single figure.
One step further
Go hunting through glossary entries, diagram keys and index pages of advanced geometry, then choose the term whose obscurity matches how rarely a casual solver would reach for it.
Reveal answers 251
- Isoscelizer pointDeep Cut85points
- Jerabek antipodeDeep Cut85points
- Jerabek centerDeep Cut85points
- Johnson midpointDeep Cut85points
- Kenmotu pointDeep Cut85points
- Kenmotu-van Lamoen pointDeep Cut85points
- Kiepert antipodeDeep Cut85points
- Kiepert centerDeep Cut85points
- Kosnita pointDeep Cut85points
- Latus rectumDeep Cut85points
- Lemoine axisDeep Cut85points
- LobeDeep Cut85points
- Longuet-Higgins pointDeep Cut85points
- LuneDeep Cut85points
- Major axisDeep Cut85points
- Major radiusDeep Cut85points
- MaltitudeDeep Cut85points
- MeridianDeep Cut85points
- Mid-arc pointDeep Cut85points
- MidradiusDeep Cut85points
- MidsegmentDeep Cut85points
- Minor axisDeep Cut85points
- Minor radiusDeep Cut85points
- Miquel pointDeep Cut85points
- MittenpunktDeep Cut85points
- Monge pointDeep Cut85points
- Morley centerDeep Cut85points
- MouthDeep Cut85points
- Nagel lineDeep Cut85points
- Nagel pointDeep Cut85points
- Napoleon pointDeep Cut85points
- NappeDeep Cut85points
- Neuberg centerDeep Cut85points
- Newton lineDeep Cut85points
- Nine-point centerDeep Cut85points
- Nobbs pointDeep Cut85points
- NodeDeep Cut85points
- NonantDeep Cut85points
- OctantDeep Cut85points
- Orthic axisDeep Cut85points
- OrthocenterDeep Cut85points
- Outer equatorDeep Cut85points
- Outer radiusDeep Cut85points
- Parabolic segmentDeep Cut85points
- ParallelianDeep Cut85points
- Parry pointDeep Cut85points
- PetalDeep Cut85points
- Point of tangencyDeep Cut85points
- Polar radiusDeep Cut85points
- PoleDeep Cut85points
Why these answers count
Scoring here tracks rarity within the accepted set, and the spread is unusually flat: of 249 recorded answers, 228 cleared the top band, with 201 landing on 85 points and only 26 on 60. The single 100-point answer, Sagitta, is the height of a circular arc measured from chord to curve, a term that lives in surveying and drafting rather than school revision, so almost nobody reaches it first. The 85-point band is the deep shelf of the subject: Apothem, Circumcenter, Inradius, Dihedral angle — terms a strong student recognises but a casual solver never volunteers. The 60-point group is the crowded middle, the handful of features anyone can name in ten seconds, which the grading treats as necessary but unremarkable. Practical reading: length is not what pays, obscurity plus defensibility is. A two-word phrase no one else thought of beats a correct but obvious one by a wide margin, and the one outlier at the top shows how far that logic stretches.