#### Question

ABCD is a rectangle with ∠ABD = 40°. Determine ∠DBC .

#### Solution

We have,

`∠`*ABC *= 90°

⇒ `∠`*ABD *+ `∠`*DBC *= 90° [ ∵ `∠`*ABD *= 40°]

⇒ 40° + `∠`*DBC *= 90°

*∴`∠`DBC *= 50°

Is there an error in this question or solution?

Solution Abcd is a Rectangle with ∠Abd = 40°. Determine ∠Dbc . Concept: Types of Quadrilaterals.