Question

which of the following shapes show a line of symmetry?
select all correct options.
8/20

Explanation:

Step1: Recall the definition of line of symmetry

A line of symmetry is a line that divides a shape into two congruent (identical) parts.

Step2: Analyze the first shape (rectangle)

A rectangle has two lines of symmetry (vertical and horizontal). The dashed line in the first - shape is a line of symmetry as it divides the rectangle into two congruent right - angled triangles.

Step3: Analyze the second shape (parallelogram)

A general parallelogram has no lines of symmetry. The dashed line in the second - shape does not divide the parallelogram into two congruent parts.

Step4: Analyze the third shape (isosceles triangle - like shape)

The dashed line in the third - shape divides the shape into two congruent parts.

Answer:

The first and the third shapes.