WHOLE CHARACTER
角
horn (of an animal) (牛羊鹿头上的硬物); corner; angle (角落; 几何学的角); (money) cent, a tenth of a yuan (货币单位)
角 jiǎo is a horn or a corner (牛角, 角落) — while 角 jué is a role on stage: 角色, 主角.
Taught as one complete written unit. ZDIC: 象形 — an animal horn. Two living readings: jiǎo (horn, corner, cent) and jué (role, contest).