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Congruent triangles (ASA and AAS)

The starter and exit quiz of the lesson “Congruent triangles (ASA and AAS)”, from the unit “Geometrical properties: similarity and Pythagoras' theorem” (Year 9 Maths) by Oak National Academy.

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Oak National Academy

12 questions

  1. Which line segment has not been drawn to the same length as the other two?
  2. The angle marked x° is ___°.
  3. The missing angle in triangle XYZ is ___°.
  4. Triangle ABC is congruent to triangle XYZ, therefore YZ = ___ cm.
  5. Triangle ABC and triangle XYZ are congruent, therefore ___ is 9.6 cm.
  6. All __________ are similar.
  7. The criteria ASA (angle-side-angle) and AAS (angle-angle-side) are equivalent. True or false?
  8. Triangle ABC and triangle XYZ are congruent by AAS/ASA. Which angle in triangle XYZ is 46°?
  9. Match each triangle on the top row to the triangle on the bottom row that it is congruent to.
  10. Which of the following triangles is not guaranteed to be congruent to the other three triangles?
  11. Which of these quadrilaterals can be split into two congruent triangles using one diagonal?
  12. Complete this congruence proof. ∠ABD = ∠BDC as they are given in the diagram, BD is a shared edge and ∠ADB = ∠DBC as they are equal ___ angles, so triangle ABD and BDC are congruent by SAS.

License: OGL

Congruent triangles (ASA and AAS) · Examplary