a symmetrical shape
Every right circular cone, conic section, and regular polygon has at least one line of symmetry.
Trapezium
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.
the shape is a heart.
Circle, Square, Triangle
The letter D!
a Square.
Every right circular cone, conic section, and regular polygon has at least one line of symmetry.
Every right circular cone, conic section, and regular polygon has at least one line of symmetry.
Every right circular cone, conic section, and regular polygon has at least one line of symmetry.
a symmetrical shape
An isosceles triangle
The answer is a septahedron, 11 letter answer
sausage
1