Question

Can someone explain point, line, and plane symmetry to me?

Answer 1

In Geometry, we define a point as a location and no size. A line is defined as something that extends infinitely in either direction but has no width and is one dimensional while a plane extends infinitely in two dimensions.

Answer 2

point is just a single point (a,b)
line is infinite points and has an equation. I diminution
plane is 2 diminutions

Answer 3

I need to know how to apply it to questions like this: Choose the kind(s) of symmetry: point, line, plane, or none.

Answer 4

@jim_thompson5910

Answer 5

is there a way to place a line such that when you fold the figure over the line, you have the figure match up with itself?

Answer 6

yea if you fold it in half

Answer 7

in half how? a horizontal line? or vertical line?

Answer 8

horizontally

Answer 9

correct

Answer 10

so that letter C has line symmetry because of that property

Answer 11

another example of line symmetry

http://etc.usf.edu/clipart/76000/76033/76033_a_lg.gif

Answer 12

how do I know if it is the dot or plane?

Answer 13

point symmetry is where you're able to rotate the figure about the center so that it matches up with itself (the angle of rotation is less than 360 degrees)

Answer 14

examples of letters with point symmetry:

S, X, Z

if you rotate those letters 180 degrees about their center, the letters will remain the same as the original letter

Answer 15

thank you. You are helping me so much! :) but what about plane?

Answer 16

here's a visual example of plane symmetry

http://skywalker.cochise.edu/wellerr/crystalgrow/6reflection.jpg

Answer 17

if you cut a 3D object in half, and each half is a mirror of another, then you have plane symmetry

Answer 18

Much thanks, love!

Answer 19

glad to be of help