Historical clue formulations

• A cube has 12 of them — 2026-08-31
• Sides — 2026-02-11
• Outer limits — 2025-12-29
• They might be rough or perforated — 2025-07-18
• Outer boundaries, as where this puzzle's theme answers are located — 2025-07-09
• Pentagon quintet — 2025-03-22
• Parts of a jigsaw puzzle that many people work on first — 2025-02-17
• A cube has 12 — 2024-12-17
• Crimped parts of ravioli — 2024-11-07
• Variable in Euler's polyhedron formula (V − E + F = 2) — 2024-09-28
• Outlines — 2024-07-25
• Often-frayed parts of papyrus — 2024-06-23
• Beats in a photo finish, say — 2024-02-02
• Outer limits — 2023-11-15
• Cube's 12 — 2023-10-15
• Outer boundaries — 2023-05-10
• Barely beats — 2023-04-15
• 12 parts of a dodecagon — 2022-11-08
• There are 30 on an icosahedron — 2022-06-23
• Beats (out) — 2021-12-23
• There are 24 in a cuboctahedron — 2021-10-24
• Pyramids typically have eight of them — 2021-08-24
• Cusps — 2021-07-14
• Narrowly beats (out) — 2021-03-07
• Beats by a whisker — 2020-12-22
• Things that spheres lack — 2020-08-11
• What the "E" of Euler's formula V - E + F = 2 represents — 2019-09-27
• Beats by a small margin — 2019-07-03
• Eight things on an octagon — 2019-04-08
• Nips — 2018-09-06
• A cylinder has two — 2018-05-06
• Nips — 2017-12-16
• Skirts — 2016-01-16
• Where faces meet — 2013-10-19
• A cube has 12 of them — 2013-08-26
• Noses — 2013-05-19
• See 32-Down — 2013-02-21
• Precarious positions — 2012-09-01
• Barely beats — 2012-07-04
• Does some yard work — 2012-04-08
• Parts causing paper cuts, say — 2011-11-24
• Ball's lack — 2011-09-02
• Lips — 2011-05-26
• Lips — 2010-12-23
• A hexagon has six of them — 2010-10-25
• Nips — 2010-03-06
• Sphere's lack — 2009-11-21
• Noses out — 2009-10-11
• Lips — 2009-05-24
• Outer reaches — 2008-09-24