An isosceles right angle triangle fits the description
Most shapes have no line of symmetry and no right angle. Look at your hand, feet, face or body (the last two are only nearly symmetrical), the keyboard, the monitor.
d
It is a triangle
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.
Pentagon
Most shapes have no line of symmetry and no right angle. Look at your hand, feet, face or body (the last two are only nearly symmetrical), the keyboard, the monitor.
A pentagon has 5 lines of symmetry and no right angle.
d
It is a triangle
a shape with a 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.
Every right circular cone, conic section, and regular polygon has at least one line of symmetry.
A square
a trapezoid
The 2D shape which has one line of symmetry is the trapezium.