angle with s inside

U+299E

acute angle

U+299F

spherical angle opening left

U+29A0

spherical angle opening up

U+29A1

turned angle

U+29A2

reversed angle

U+29A3

angle with underbar

U+29A4

reversed angle with underbar

U+29A5

oblique angle opening up

U+29A6

oblique angle opening down

U+29A7

measured angle with open arm ending in arrow pointing up and right

U+29A8

measured angle with open arm ending in arrow pointing up and left

U+29A9

measured angle with open arm ending in arrow pointing down and right

U+29AA

measured angle with open arm ending in arrow pointing down and left

U+29AB

measured angle with open arm ending in arrow pointing right and up

U+29AC

measured angle with open arm ending in arrow pointing left and up

U+29AD

measured angle with open arm ending in arrow pointing right and down

U+29AE

measured angle with open arm ending in arrow pointing left and down

U+29AF

reversed empty set

U+29B0

empty set with overbar

U+29B1

empty set with small circle above

U+29B2

empty set with right arrow above

U+29B3

empty set with left arrow above

U+29B4

circle with horizontal bar

U+29B5

circled vertical bar

U+29B6

circled parallel

U+29B7

circled reverse solidus

U+29B8

circled perpendicular

U+29B9

circle divided by horizontal bar and top half divided by vertical bar

U+29BA

circle with superimposed x

U+29BB