Page 249 - Mind Games The Aging Brain and How to Keep it Healthy

Enjoy Your Ageless Mental Agility • 233

or d, flip your tracing paper over and rotate it until it
matches plan a, c, and d. They are the rotations of the mirror
image of the original plan.

3D Spatial Relationships
Now consider one of a pair of dice, a die. Use Figure 7-6. Which
of the four dice matches the die on the left when rotated?

a b

c d

Figure 7-6 Match dice

The answer is letter a. It may help to visualize this
process:
1. The die on the left was first rolled so that the 6 pips
(dots) were on the top.
2. Then it was turned 90 degrees to the left.

It also may help to find a pair of dice and try to set them
up to match the picture. As a kinesthetic learner, you will
want to turn them in your hands to help verify this result.
Did you notice that all dice are alike in the placement of
the pips? That’s a standardization you may not have been
aware of! Now notice that the dice in options b, c, and d in
the exercise are not even regulation dice. How can you tell?
Hint: Try to arrange a die to resemble the dice in b, c, and d.