CRYPTIC CROSSWORD No. 16,820

ACROSS: 1 Right-angled. 9 Melange. 10 Giraffe. 11 Ail. 12 Acts out. 13 Incense. 14 Rev. 15 Apple. 17 Lathe. 18 Alpha. 20 Set-to. 22 Arm. 24 Croatia. 25 Drifter. 26 Cur. 27 Stomach. 28 Anarchy. 29 Nationalise.

DOWN: 1 Relative pronoun. 2 Gondola. 3 Treat. 4 Negligent. 5 Lyrical. 6 Definite article. 7 Impair. 8 Delete. 16 Pistachio. 18 Access. 19 Attract. 21 Origami. 23 Martyr. 25 Drama.