Question

Next to each figure below fill in (a) number of lines of symmetry and (b) all the angles of rotational symmetry. Write "none" where necessary.

Answer 1

did you draw those lines?

Answer 2

yes

Answer 3

you are doing it right.

Answer 4

what are angle of rotational symmetry?

Answer 5

and how do i figure out what it is for each shape?

Answer 6

the first object has four angles
the bottom left and bottom right are symmetric
and the top left and top right are symmetric

Answer 7

in the case of the square it has 4 angles which are all symmetric

Answer 8

the equivalent triangle has 3 angles which are all symmetric to each other

Answer 9

so the first shape has a 180 degree rotational symmetry?

Answer 10

and the square has a 90 degree rotational symmetry?

Answer 11

oh man i my answers are incorrect

Answer 12

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.

Answer 13

so the first one's degree of rotational symmetry is 180 degrees

Answer 14

the square has 90 180 270 and 360

Answer 15

the triangle is 60 120 and 180

Answer 16

the fourth one is 180

Answer 17

how is the triangle 180 shouldnt it be 360 rotated all the way around?

Answer 18

im sorry, yes the equatorial triangle has 120 240 and 360 degrees of rotational symmetry

Answer 19

the isocelles triangle has 360 degrees of rotational symmetry

Answer 20

does the 4th shape have two lines of symmetry?

Answer 21

it only has one

Answer 22

oh yeah i see that

Answer 23

you cant split it down the middle because its crooked.

Answer 24

and no lines of symmetry?

Answer 25

what do you mean no lines of symmetry

Answer 26

i meant no angles of rotational symmetry for the 4th shape

Answer 27

yep

Answer 28

take a picture of your paper and post it over here once you have finished doing it all

Answer 29

okay one second

Answer 30

ok i posted it

Answer 31

the first one has no angles of rotational symmetry

Answer 32

or you could right 360 degree

Answer 33

write*

Answer 34

6. 2 lines of symmetry
7. only 180 degree rotational symmetry

Answer 35

hmm this is so confusingif 7. has four lines of symmetry doesnt that mean that it has four angles of rotational symmetry also??