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Triangles maths class 9

Triangle congruence criteria, similarity properties, and angle relationships for Class 9

5 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Which one of the following cannot be the ratio of angles in a right-angled triangle?

  1. 1:2:3
  2. 1:1:3
  3. 1 : 3 : 6
  4. None of these
Question 2 True/False

All congruent triangles are similar, but all similar triangles are not congruent.

  1. True
  2. False
Question 3 Multiple Choice (Single Answer)

If two triangles are congruent, then they are

  1. Symmetrical
  2. Identical
  3. Equilateral
  4. Isosceles
Question 4 Multiple Choice (Single Answer)

If the areas of two similar triangles are equal,  then they are congruent.

  1. True
  2. False
Question 5 Multiple Choice (Single Answer)

SAS criterion is true when two sides  and the included angle is congruent with the when two sides  and the included angle of the other triangle are equal. The included angle means

  1. The side between two sides
  2. The angle not between two sides
  3. The line between two sides
  4. The angle between two sides
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