Question

symmetry
which figures below do not have a line of symmetry?
(note there might be more than one shape that does not)
isosceles trapezoid
scalene
triangle
isosceles triangle
rectangle
trapezoid
parallelogram
ellipse
circle

Explanation:

Step1: Define line of symmetry

A line of symmetry divides a figure into two congruent parts.

Step2: Analyze each figure

• Isosceles Trapezoid: Has a vertical line of symmetry.
• Scalene Triangle: No line of symmetry (all sides and angles are different).
• Isosceles Triangle: Has a line of symmetry (the altitude from the vertex to the base).
• Rectangle: Has two lines of symmetry (vertical and horizontal).
• Trapezoid (assuming non - isosceles): No line of symmetry.
• Parallelogram: No line of symmetry (in general, except for special cases like a rhombus or rectangle which are subsets).
• Ellipse: Has two lines of symmetry (major and minor axes).
• Circle: Has infinitely many lines of symmetry.

Answer:

Scalene Triangle, Trapezoid (non - isosceles), Parallelogram