text: Classes
  Class 9Class 10First YearSecond Year
  $3. If 13 \mathrm{~cm} 12 \mathrm{~cm} and 5 \mathrm{~cm} are the lengths of a triangle then verify that difference of measures of any two sides of a triangle is less than the measure of the third side.$
  
  $6. If 3 \mathrm{~cm} and 4 \mathrm{~cm} are lengths of two sides of a right angle triangle then what should be the third length of the triangle.$
  
  $4. Prove that in a right-angled triangle the hypotenuse is longer than each of the other two sides.$
  
  $1. Two sides of a triangle measure 10 \mathrm{~cm} and 15 \mathrm{~cm} . Which of the following measure is possible for the third side?(b) 20 \mathrm{~cm}$
  
  $1. In the figure P is any point and A B is a line. Which of the following is the shortest distance between the point \mathrm{P} and the line \mathrm{AB} ?(c) \mathrm{mPN}$
  
  $3. In the \triangle \mathrm{ABC} \mathrm{m} \angle \mathrm{B}=70^{\circ} and \mathrm{m} \angle \mathrm{C}=45^{\circ} . Which of the sides of the triangle is longest and which is the shortest?$
  
  $4. \cdots If 10 \mathrm{~cm} 6 \mathrm{~cm} and 8 \mathrm{~cm} are the lengths of a triangle then verify that sum of measures of two sides of a triangle is greater than the third side.$