This crossword No. 25044 clues and answers were published on Wed 23 Jun 2010 and the puzzle can be visited by following The Guardian Cryptic Crossword No. 25044 link.
All Across Clues and Answers:
5-across – Lines crossing circles in harmonious combinations : CHORDS
6-across – Pay scale cut for French mathematician : PASCAL
9-across – Preserves volume inside conic sections, say : CURVES
10-across – Old instrument for measuring angles in part of plane : QUADRANT
11-across – Prince, for example, getting 20% in statistics and arithmetic : STAR
12-across – Basic kinds of number, each without a point : PRIMORDIAL
13-across – Indefinite number, in moderation, arranged as part of fraction : DENOMINATOR
18-across – Small pieces, half of them in old parts of county : HUNDREDTHS
21-across – Circumference of semicircle enclosing a couple : PAIR
22-across – Additional symbol or shape formed by 8 and 13 : PLUSSIGN
23-across – Bishop leading one part of church split in two : BISECT
24-across – Sixty minutes in geometry for university qualification : DEGREE
25-across – Moderates numbered twelve or thirteen in fifteen : CENTRE
All Down Clues and Answers:
1-down – Take part in discussions? For mathematicians, just the opposite : CONVERSE
2-down – Something computer does makes sense : ADDSUP
3-down – Trajectory of missile soldier shot high in air over area : PARABOLA
4-down – Marked centre in middle of small diameter : SCORED
5-down – Numbers among European aristocracy : COUNTS
7-down – Like A or B, for example, or the shortest distance between them : LINEAR
8-down – Variable quantities, including diameter, central in geometry : EQUIDISTANT
14-down – An equation is never partial like this : ONESIDED
15-down – Playing with one kind of side in triangle : OPPOSITE
16-down – Silly clue I had for geometry master : EUCLID
17-down – Charming female needing extra pound for rounded figure : CIRCLE
19-down – Condescend to include second arrangement of lines or shapes : DESIGN
20-down – Part of mathematical collection that excites us best : SUBSET
This crossword has in total 26 where 13 are across and 13 are down.