Question

explore the properties of reflection by following these steps. the angles change. the angles do not change. the angles are always right angles. 4. use the protractor to measure these angles: m∠ajk = ☐° m∠bkj = ☐° m∠clj = ☐° check

Explanation:

Step1: Measure ∠AJK

Looking at the diagram, line AJ and line JK form a right angle (since JK is vertical and AJ is horizontal, or from the protractor alignment). So \( m\angle AJK = 90^\circ \).

Step2: Measure ∠BKJ

Line BK is horizontal and JK is vertical, so they form a right angle. Thus \( m\angle BKJ = 90^\circ \).

Step3: Measure ∠CLJ

Line CL and line LJ: from the protractor and the reflection symmetry, this is also a right angle. So \( m\angle CLJ = 90^\circ \).

Answer:

\( m\angle AJK = \boldsymbol{90}^\circ \), \( m\angle BKJ = \boldsymbol{90}^\circ \), \( m\angle CLJ = \boldsymbol{90}^\circ \)