Polygons, Lines of Symmetry and Congruence

Which sequence of transformations does triangle ABC map onto triangle A''B''C''?

• A reflection over x-axis, then a rotation.

• A rotation, then a reflection over y-axis.

• A reflection over y-axis, then a rotation.

• A rotation, then a reflection over x-axis.

How many lines of symmetry are there on an isosceles triangle?

• 0

• 1

• 2

• 3

What is the degrees of rotational symmetry of the following figure?

• 45 degrees

• 90 degrees

• 72 degrees

• 120 degrees

Which number of degrees of rotational symmetry for this equilateral triangle?

• 60

• 30

• 90

• 120

Find the value of x.

• x = 60

• x = 55

• x = 15

• x = 65

How many lines of symmetry are there on a rectangle?

• 0

• 1

• 2

• 4

Tell whether the two figures are congruent.

• Yes, same size and same shape

• No, same shape but different sizes

• No, different size and different shapes

Are these shapes congruent?

• Yes

• No

Are these shapes congruent?

• Yes

• No