hitunglah besar penyiku dan pelurus dari sudut sudut berikut. 25° , 62° , 45° , 27,5°

penyiku


--- 90 - 25 = 65°.
--- 90 - 62 = 28°
--- 90 - 45 = 45°
--- 90 - 27.5 = 62.5°

pelurus

--- 180 - 25 = 155°
--- 180 - 62 = 118°
--- 180 - 45 = 135°
--- 180 - 27.5 = 152.5°