Q187
ABCDE is a regular pentagon. Its sides are extended as shown in the figure. The value of ABC + 2 EGD + 3 BAJ6 = ?
ABCDE is a regular pentagon. Its sides are extended as shown in the figure. The value of


A.
45°
B.
30°
C.
75°
D.
66°
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:

∠ABC = 108° {Internal Angle of regular pentagon}
∠EGD = 108° - (∠E + ∠D)
= 108° - (72° + 72°)
= 36°
∠BAJ = 72°