2. Questions Bank
  3. 5th Class
  4. Mathematics
  5. Geometry

5th Class Mathematics Geometry Question Bank Geometry

  • question_answer
    If the sum of two angles in a triangle equals third angle then the triangle is :

    A) Equilateral     

    B) Right angled   

    C) Obtuse angled

    D) None of these

    Correct Answer: B

    Solution :

    Let angles are x, y and z. x + y = z In any A, sum of interior angles is equal to \[{{180}^{o}}\] \[\therefore \]x + y + z = \[{{180}^{o}}\] z + z = \[{{180}^{o}}\] 2z = \[{{180}^{o}}\] z = \[{{90}^{o}}\] Therefore, the triangle is right angled\[\Delta \] .


You need to login to perform this action.
You will be redirected in 3 sec spinner