Abcdefgh is a regular octagon. the minimum degree of rotation by which this octagon can map onto itself is °. it will take increments of that degree of clockwise rotation for a′ (the image of a) to coincide with c.

Step-by-step explanation:

ABCDEFGH is a regular octagon. The minimum degree of rotation by which this octagon can map onto itself is °.

Since it is a regular octagon, rotation can be done about the centre to the angle.

The central angle subtended by each side to the centre is 360/8 = 45 degrees.

Hence A will become B when rotated about 45 degrees.

Thus rotation requires 45 degrees abut the center.

definition: a circle is the  set of all points in a plane that are equidistant  from a given  point  called the center of the circle. we use the symbol ⊙ to represent a circle. the a line segment from the center of the circle to  any point  on the circle is a radius of the circle.

step-by-step explanation:

i googled it and this is what i got i don't know how it is. sorry.

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