jika besar sudut kln 45° dan mnl 30° tentukan besar a. mnl b. knl. c. lkm. d. kml. e. nkm. f. nmk. g. jumlah sudut lkm, knm, dan mlk

MNL = 30°
KNL = 30°
LKM = 45°
KML = 45°
NKM = 60°
NMK = 60°
LKM + KNM +MLK = 45 + 30 + 90
= 75 + 90
= 165°

a. <MNL = 30°
b. <KNL = 30°
c. <LKM = 180° - (90+45)° = 180° - 135° = 45°
d. <KML = <LKM = 45°
e. <NKM = 180° - (90+30)° = 180° - 120° = 60°
f. <NMK = <NKM = 60°
g. <LKM + <KNM + <MLK = 45° + (2.30)° + (2.45)° = 45° + 60° + 90° = 195°