Learning Resources

Investigation 2: Properties of Chords (hints)

Part 1

Step A

Make sure you construct a reasonably large circle (12 to 18 cm) so that you can more easily see what conclusion the investigation is attempting  to get you to reach. In fact, since you will need another similar circle later, you may as well make two now.

Step C

Look at the diagram in the margin on page 210. If you have done things correctly, you will have folded the circle in half and the fold line is the diameter.

Step E

You should have noticed that  M is the mid Point and that the angles are right angles.

Step H

If you can not make a conjecture based on the paper folding, try the alternate investigation suggested in the following part of the main lesson.

Part 2

Step M

If you can not make a conjecture based on the paper folding, try the alternate investigation suggested in the following part of the main lesson.