Congruency & Lines of Symmetry

Front

What does it mean for two figures to be congruent?

Back

Two figures are congruent if they have the same shape and size, even if they are oriented differently.

Front

How can you determine if two shapes are congruent?

Back

You can determine if two shapes are congruent by checking if one can be transformed into the other through rotation, reflection, or translation.

Front

What is a line of symmetry?

Back

A line of symmetry is a line that divides a shape into two identical halves that are mirror images of each other.

Front

How many lines of symmetry does a square have?

Back

A square has 4 lines of symmetry.

Front

How many lines of symmetry does a circle have?

Back

A circle has an infinite number of lines of symmetry.

Front

How many lines of symmetry does a triangle have?

Back

An equilateral triangle has 3 lines of symmetry.

Front

How many lines of symmetry does a rectangle have?

Back

A rectangle has 2 lines of symmetry.

Front

How many lines of symmetry does a parallelogram have?

Back

A parallelogram has 0 lines of symmetry.

Front

What is the symbol for congruence?

Back

The symbol for congruence is '≅'.

Front

If ∠A ≅ ∠B, what does this mean?

Back

It means that angle A is congruent to angle B, meaning they have the same measure.