| 100% | MAJORAXIS | 9 | Line that passes through both of an ellipse's foci |
| 99% | MAJORAXIS | 9 | Line that passes through both of an ellipse’s foci |
| 45% | AXIS | 4 | Line that joins foci, for an ellipse |
| 40% | FOCI | 4 | What an ellipse's major axis passes through |
| 36% | BOUNDARY | 8 | Line that marks the limits of an area |
| 36% | YEA | 3 | Vote that's both an anagram and a synonym of "aye" |
| 36% | ETTA | 4 | Name that's an anagram of both 16- and 18-Across |
| 35% | TROPIC | 6 | ___ of Capricorn (line that passes through the Mozambique Channel and the Coral Sea) |
| 34% | SEMIMINOR | 9 | ___ axis, half of an ellipse's shorter diameter |
| 33% | LACK | 4 | *When you experience ___ of focus or attention, it's an indication that it's time to sleep! |
| 32% | ORAL | 4 | An agreement that is conveyed through speech instead of in writing |
| 32% | SCRIPT | 6 | Set of lines that an actor reads |
| 32% | OHIO | 4 | River that formed an extension of the Mason-Dixon line |
| 32% | LONGFELLOW | 10 | Author of an 1841 poem that contains the line spelled out by the circled squares |
| 32% | IRANCONTRA | 10 | Scandal that’s the focus of Theodore Draper’s “A Very Thin Line” |
| 31% | ACTOR | 5 | Word that's an apt anagram of CO-STAR minus S |
| 31% | TIP | 3 | Part of an iceberg that's visible |
| 31% | NAVEL | 5 | Focus of an egoist's gaze |
| 31% | ACL | 3 | Focus of an athlete's MRI |
| 31% | ALOE | 4 | Cousin of an agave, that's a soother |
| 30% | AXIS | 4 | Line passing through a graph's origin |
| 30% | RHONE | 5 | River that passes through Lyon |
| 30% | SEMIMINORAXIS | 13 | Shortest radius of an ellipse |
| 30% | ELECTROLYSIS | 12 | Process of passing an electric current through a conducting solution causing a chemical change |
| 30% | COATOFMANYCOLORS | 16 | Biblical garment that's the focus of an Andrew Lloyd Webber musical |
| 30% | YESBUT | 6 | Start of an agreement that's not really an agreement |
| 30% | SENT | 4 | Status of an email that's left the out-box |
| 30% | METEORITE | 9 | A chunk of an asteroid that's fallen to earth |
| 30% | PADS | 4 | Parts of an animal's paw that leave prints |
| 30% | POSITIVE | 8 | Type of charge that flows through an anode |