15. Each ? below represents a factor between 1 and 9. Draw lines to match each fact on the left with a pattern for its products on the right.

? XO

O in the ones place

? X1

O or 5 in the ones place

? x 2

0,2,4,6, or 8 in the ones place

? X 5

The other factor in the ones place

? X9

1 less than the unknown factor in the tens place

Areflection of shape i across the y-axis, followed by a , and then a translation left 6 units and down 4 units confirms congruence between shape i and shape ii. alternatively, a of shape ii about the origin, followed by a reflection across the y-axis, and then a translation right 4 units and up 6 units confirms congruence between shape ii and shape i.