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did you draw those lines?
you are doing it right.
what are angle of rotational symmetry?
and how do i figure out what it is for each shape?
the first object has four angles the bottom left and bottom right are symmetric and the top left and top right are symmetric
in the case of the square it has 4 angles which are all symmetric
the equivalent triangle has 3 angles which are all symmetric to each other
so the first shape has a 180 degree rotational symmetry?
and the square has a 90 degree rotational symmetry?
oh man i my answers are incorrect
an object with rotational symmetry, also known in biological contexts as radial symmetry, is an object that looks the same after a certain amount of rotation. An object may have more than one rotational symmetry; for instance, if reflections or turning it over are not counted. The degree of rotational symmetry is how many degrees the shape has to be turned to look the same on a different side or vertex. It can not be the same side or vertex.
so the first one's degree of rotational symmetry is 180 degrees
the square has 90 180 270 and 360
the triangle is 60 120 and 180
the fourth one is 180
how is the triangle 180 shouldnt it be 360 rotated all the way around?
im sorry, yes the equatorial triangle has 120 240 and 360 degrees of rotational symmetry
the isocelles triangle has 360 degrees of rotational symmetry
does the 4th shape have two lines of symmetry?
it only has one
oh yeah i see that
you cant split it down the middle because its crooked.
and no lines of symmetry?
what do you mean no lines of symmetry
i meant no angles of rotational symmetry for the 4th shape
take a picture of your paper and post it over here once you have finished doing it all
okay one second
ok i posted it
the first one has no angles of rotational symmetry
or you could right 360 degree
6. 2 lines of symmetry 7. only 180 degree rotational symmetry
hmm this is so confusingif 7. has four lines of symmetry doesnt that mean that it has four angles of rotational symmetry also??
so 7. has 180 and 360 then?
doesnt every shape have 360 degree rotational symmetry though?
every shape has 360 degree rotational symmetry because 0 degree and 360 degree are exactly the same states so it doesnt matter if you skip 360 degree in your answer because its the same as the original position.
so the 7th one has 180 degree rotational symmetry
ok, so i should put none if a shape only has a 360 degreee rotation?
so number 5. ill put no rotational symmetry.
no. 5 would be no rotational symmetry
and in no. 2 and 3 you can take off 360 degree but its okay if you decide to keep it
oh okay thanks alot! i get it now .
wow man, me and my brother and sister all went through american school of correspondence and all struggled with this question, and we all refer to this, thank you so much Paul1231