right-angled (triangle etc.)

azimuth, an arc of the heavens extending from the zenith to the horizon which it cuts at right angle

alternate angles

acute-angled triangle

a point of view

realist, a person who accepts a situation as it is and is prepared to deal with it accordingly

plane angle

an obtuse-angled triangle

Those who like variation, innovation

a person who jokes a lot, frisky, lilt, hilarious, gleeful

fond of beautification, adornment and make up

one who likes comforts, luxury

one who likes to tackle difficult problems or issues, adventurer

debonair, swinging

one who likes profound or abstruse topics, one who likes to undertake difficult tasks

progressive, a person advocating or implementing social reform or new, liberal ideas

ignorant, negligent, careless

epicure

one who likes change, alterations

courage of one who likes hard difficulty

one who relishes different sights

supplementary angle