Page 107 - NUMINO Challenge_B1
P. 107
Type 12-1 Number of Intersecting Points

Two congruent circles can have 1 or 2 intersecting points. Find all
possible numbers of intersecting points of three circles. (Any two
circles must intersect at one point or more.)

1 Two circles are drawn to create 1 intersecting point. When one more circle
is drawn, find the numbers of intersecting points of three circles.

2 Two circles are drawn to create 2 intersecting points. When one more circle

is drawn, find the numbers of intersecting points of three circles. Exclude

the number of intersecting points found in . 1

3 What are the possible numbers of intersecting points of three circles.

4 Find possible numbers of intersecting points when a line crosses two
congruent circles.

104 NUMINO Challenge B1
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