ABCD is a rectangle with ∠ABD = 40°. Determine ∠DBC
Question:
ABCD is a rectangle with ∠ABD = 40°. Determine ∠DBC
Solution:
We have,
∠ABC = 90°
⇒ ∠ABD + ∠DBC = 90° [∵ ∠ABD = 40°]
⇒ 400 + ∠DBC = 90°
∴ ∠DBC = 50°