Question

1. which is the line of reflection for each pair of figures?

Explanation:

Step1: Analyze the first pair of figures

For the first pair of pentagons, we check the symmetry. The line \(a\) is the vertical line that is equidistant from corresponding points of the two pentagons. If we take a point on one pentagon and its corresponding point on the other pentagon, the line \(a\) is the perpendicular bisector of the segment joining those two points.

Step2: Analyze the second pair of figures

For the second pair of triangles, the line \(a\) is the vertical line that is equidistant from corresponding points of the two triangles. If we take a vertex of one triangle and its corresponding vertex on the other triangle, the line \(a\) is the perpendicular bisector of the segment joining those two vertices.

Answer:

For the first pair of figures, the line of reflection is \(a\). For the second pair of figures, the line of reflection is \(a\).