Question

find m∠abd. type answer here

Explanation:

Step1: Identify triangle properties

Triangle with equal sides (marked) is isosceles, so base angles equal.

Step2: Calculate angle at B

Sum of angles in triangle: $180^\circ - 58^\circ = 122^\circ$. Divide by 2: $61^\circ$.

Step3: Determine $\angle ABD$

$\angle ABD$ equals this base angle.

Answer:

61