Smallangle.jpg
wkurth
en
Smallangle, Small angle
commons
en
Smallangle, Trigonometry, Angles (geometry)
commons
ja
小角、小角
commons_translated
ja
小径三角法、角角
commons_translated
right-angled trigonometric angular unit trigonometry obtuse angle acute angle reflex angle oblique-angled vertical angle oblique angle plane angle complementary angles right angle angulate angle