英和和英

the critical angle

the sharpness of a pointed angle

a contained angle

the angle of incidence

the angle of incidence

an angle of incidence

an acute angle

an acute angle

a value of an angle of incidence, called critical angle

a salient angle

a solid angle

an acute [obtuse] angle

an angle of declination

to measure an angle

the units used to measure angles, called degrees

of an angle

a right angle

the vertex of an angle

an angle of inclination

to orient―orientate―（oneself）

an angle, called elevation angle

Angles are measured in degrees.

an obtuse angle

opposite angles

forming a right angle

to delineate a boundary

the angle of something when it is at a slant

be at an angle

a square corner

the angle of refraction