Question

find a line of symmetry for triangle​

Answer 1

Step-by-step explanation:

You can find if a shape has a Line of Symmetry by folding it.

When the folded part sits perfectly on top (all edges matching), then the fold line is a Line of Symmetry.

Here I have folded a rectangle one way, and it didn't work.But when I try it this way, it does work (the folded part sits perfectly on top, all edges matching):

So this is a Line of Symmetry

Triangles

A Triangle can have 3, or 1 or no lines of symmetry .Equilateral Triangle

(all sides equal,

all angles equal) Isosceles Triangle

(two sides equal,

two angles equal) Scalene Triangle

(no sides equal,

no angles equal)

3 Lines of Symmetry 1 Line of Symmetry No Lines of Symmetry

Answer 2

Step-by-step explanation:

The two sides meeting at that vertex must be the same length in order for there to be a line of symmetry .when the two sides meeting at a vertex do have the same length ,the line of symmetry through that vertex passes through the midpoint of the opposite side.