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Class 10

Triangles: Mixed Practice, Quiz

Five questions on the whole Triangles chapter. Pick one answer for each.

5 questions, one mark each. 3 to pass. Suggested time: 10 minutes. Your answers are not recorded.

  1. DE∥BCDE \parallel BC in △ABC\triangle ABC, AD=4AD = 4, DB=6DB = 6, AE=6AE = 6. Find ACAC.
  2. Triangles with sides 4,6,84, 6, 8 and 6,9,126, 9, 12 are:
  3. A 1.51.5 m stick casts a 22 m shadow when a tower casts a 4040 m shadow. How tall is the tower?
  4. △ABC∼△DEF\triangle ABC \sim \triangle DEF, ∠A=45∘\angle A = 45^\circ, ∠F=80∘\angle F = 80^\circ. Find ∠B\angle B.
  5. Which is NOT a criterion for similarity of triangles?
Unanswered questions are marked wrong.

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