An isosceles triangle has one line of symmetry
a pentagon
You cannot have one parallel line. There must be another line that it is parallel to. Also, 1 symmetry is meaningless - you can have one axis of symmetry or rotational symmetry of order one. The answer will depend on which one it is.
a symmetrical shape
There are infinitely many lines of symmetry. Every line can be a line of symmetry for a suitable shape.
An isosceles triangle has one line of symmetry
An isosceles triangle has one line of symmetry
a heart
A symmetrical shape is said to have line symmetry. A shape that has line symmetry can have one or more lines of symmetry
a shape with a line of symmetry
the shape is a heart.
Yes. Any equilateral shape can have both rotational and line symmetry.
scalene triangle.
a pentagon
polygon!
An irregular pentagon.
Isosceles triangle