Similarity Congruence and Symmetry

• Dilation

• Reflection

• Rotation

• Translation

∠NLM

• ∠NLM

• ∠MLN

• ∠LMN

• ∠LNM

• 23°

• 27°

• 33°

• 36°

• 37°

• Rotate 90° counterclockwise around R,

  translate on QX, reflect over the XZ

• Rotate 90° counterclockwise around Q,

  translate on SY, reflect over the XY

• ∠S ≅ ∠Y so m∠S = m∠Y = 58°

• ∠S ≅ ∠Y so m∠S = m∠Y = 52°

• ∠S ≅ ∠Y so m∠S = m∠Y = 48°

• ∠S ≅ ∠Y so m∠S = m∠Y = 42°

• ∠S ≅ ∠Y so m∠S = m∠Y = 38°

• Dilation

• Reflection

• Rotation

• Translation

Which figure(s) have rotational symmetry?

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What is the name for this symbol?

• approximate sign

• congruence sign

• equal sign

• similarity sign

Which figure(s) has a rotational symmetry at 180°?

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What property states that something is congruent to itself?

• Symmetry Property

• Congruence Property

• Reflexive Property