Question

answer
(d=square^{circ})
(e = square^{circ})
(f=square^{circ})
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Explanation:

Step1: Identify the right - angle

The symbol of a right - angle is given for angle \(d\), so \(d = 90^{\circ}\).

Step2: Use the property of vertical angles

Vertical angles are equal. Angle \(e\) and the \(73^{\circ}\) angle are vertical angles. So \(e=73^{\circ}\).

Step3: Use the property of supplementary angles

Angle \(e\) and angle \(f\) are supplementary (they form a straight - line, and the sum of angles on a straight - line is \(180^{\circ}\)). So \(f = 180^{\circ}-e\). Substituting \(e = 73^{\circ}\), we get \(f=180 - 73=107^{\circ}\).

Answer:

\(d = 90\), \(e = 73\), \(f = 107\)