| ISOSCELES | What name is given to a triangle that has two equal sides? (9) |
| ISOSCELESTRIANGLE | It has two equal sides (Letters 9-12 & 14-15 ... and, separately, 13) |
| RHOMBUS | In geometry, what is an oblique-angled parallelogram with four equal sides? (7) |
| SCALENE | Proportion points to a triangle (7) |
| INTEGRAL | Intrinsic to a triangle? (8) |
| ABORIGINE | What name is given to a person, animal or plant that has been in a region from the earliest times? (9) |
| HARROVIAN | What name is given to a boy from a public school founded in 1571? (9) |
| BICAMERAL | Describing a parliament that has two chambers (9) |
| MILLIPEDE | Arthropod that has two pairs of legs on most body segments (9) |
| GLENGARRY | What name is given to a Scottish cleft cap with dangling ribbons? (9) |
| CONTRANYM | Word that has two diametrically opposed meanings (like this puzzle's eight theme entries) |
| DROMEDARY | Camel with one hump - it's the Bactrian one that has two |
| ECLAMPSIA | In medicine, what name is given to the recurring convulsions that can occur during pregnancy or part |
| ASTRONOMY | What name is given to the science of studying the stars? (9) |
| ROYALISTS | What name is given to supporters of the monarchy? (9) |
| PEKINGMAN | What name is given to the fossils of a species of homo erectus discovered in 1923 near Beijing? (6,3 |
| LIONOFGOD | What name is given to the Archangel Ariel? (4,2,3) |
| GREATPAUL | Weighing in at nearly 17 tonnes what name is given to the largest bell in the UK in current use, heard in London? (5,4) |
| BINARY | A system of numerical notation that has two rather than ten as a base (6) |
| HYPOTENUSE | The side in a right-angled triangle that is opposite the right angle (10) |
