The angles of rotations that will carry this equilateral triangle into itself are (b) and (c)
What are the rotations that will carry this equilateral triangle into itself?
The triangle is an equilateral triangle
The angles in an equilateral triangle is 60 degrees
This angle also represent the angle of rotation that will carry this equilateral triangle into itself
The other angle of rotations that will carry this equilateral triangle into itself are multiples of 60
i.e. 120, 180, 240
Hence, the angles of rotations that will carry this equilateral triangle into itself are (b) and (c)
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