1what are the reflections symmetries and the rotational symm

(1)what are the reflections symmetries and the rotational symmetries of the equilateral triangle KLM? Be sure to identify the lines reflection and the number of degrees in the rotation.

(2) How could you predicted that the angles of rotation here should be 120, 240 and 360 degrees, why doen\'t 90 degrees work?

Solution

If two lines are parallel and a line which is in vertical and making 30 degress to horizontal is drawn then we can see the reflection and angles.

the angle of rotation sould be 60,120,240,160 . if it\'s is 90 then the anglees are in perpendicular direction and it is not called angle of rotation.