Question

Tolong dong yang nomor 3

Answer 1

∠DCA = 2/5 x (180-90)° = 2 x 18° = 36°
∠CDB = 3/5 x (180-90)° = 3 x 18° = 54° => ∠CDB = ∠ADB
∠DAB = 5 x 18° = 90°

a.) ∠DCA = 2/5 x (180-90)° = 2 x 18° = 36°

b.) ∠ABD = (180°- (∠DAB+∠ADB))
             = (180° - (90°+54°)
             = (180° - 144°) = 36°

c.) ∠DCB = d.) ∠DAB = 90°