Group the given figures into three classes using each figure only once.
Correct Answer: 1,5,8 ; 2,4,7 ; 3,6,9
Explanation:
3, 6, 9 are geometrical figures containing line segments (the number of these line segments is half the number of sides in the figure) parallel to the sides of the figure.
1, 5, 8 consist of a circle and a triangle intersecting it. The triangle is also divided into two equal parts by a straight line.
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