How to reflect a figure over a line of symmetry ex 1

The video tutorial explains how to apply a reflection across a line, which serves as the line of symmetry. It emphasizes that reflection is a congruent transformation, meaning the size and shape of the figure remain unchanged. The tutorial demonstrates how to redraw the figure on the opposite side of the line, ensuring that distances from the line are equal on both sides. The process is illustrated with a rectangle, showing how to label the new figure as a prime. The tutorial concludes with a summary of the reflection process.

What is the primary purpose of a line of reflection in geometry?

• To rotate a figure around a point

• To mirror a figure over the line

• To change the size of a figure

• To translate a figure to a new location

Which of the following best describes a congruent transformation?

• It changes the size of the figure

• It alters the shape of the figure

• It maintains the size and shape of the figure

• It flips the figure upside down

What remains unchanged when a figure is reflected over a line?

• The color of the figure

• The size and shape of the figure

• The position of the figure

• The orientation of the figure

In a reflection, how do the distances from the line of reflection compare?

• They are half as long on one side

• They are twice as long on one side

• They are equal on both sides

• They are different on each side

What is the new figure called after a reflection?

• Figure C

• Figure A prime

• Figure A double prime

• Figure B