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How to find the rotational symmetry and line of symmetry of a given diagram?
Its quite easy particularly line of symmetry !
for that all u have to do is that think of a line in that figure which passes through the centre and cuts the figure in two equal parts which when stacked on each other would be exact same so its quite easy and u may learn them by heart becuz they are quite easy !
for rotational Symmetry it is a point on the figure that when turned a particular angle will cause the the same figure to appear again,think of it like this i take a rectangle and in soft mud i make its impression so that i have its outline now i turn it once to get the same outline and i found that after turning the figure 180* from centre i get the same figure which fits easily into the impression i made then again it turn the same angle and it fits again so after completing one whole circle the no. of times the rectangle fits in the impression is known as the order of rotational symmetry and here its 2 for polygons like hexagon and other evenly shaped polygons they have the same order of rotation as their sides