Question

Diketahui besar sudut FAB = 118° DAN CED 55° tentukan besar sudut berikut
A. ∠DAB
B. ∠ABE
C. ∠CDE
D. ∠DCE

Answer 1

A. ∠DAB = 180°-118°

= 62°

B. ∠ABE = ∠DEB

= ∠DEB =180°-55°

=125°

C. ∠CDE = ∠DAB

= 62°

D. ∠DCE = 180° - (55°+(180°-118°))

= 180° - (55° + 62°)

= 180° - 117°

= 63°