Question 1 :
Given the measures of the sides of the triangle , identify which measures are in the ratio 3 : 4 : 5
Question 2 :
Three points $\left( {0,0} \right), \left( {3,{\sqrt{3}}} \right), \left( {3, \lambda} \right)$ form an equilateral triangle, then $\lambda$ is equal to
Question 4 :
Which of the following could be the side lengths of a right triangle?
Question 6 :
Two sides of a triangle are of lengths 5 cm and 1.5 cm, then the length of the third side of the triangle cannot be
Question 7 :
Assertion: Show that the points $(a, a), (-a, -a)$ and $(-\sqrt{3}a, \sqrt{3}a)$ are the vertices of an equilateral triangle. 
Reason: Using the distance formula we can show that the sides are equal.
Question 8 :
In any triangle, the side opposite to the larger (greater) angle is longer
Question 10 :
The sides of a triangle (in cm) are given below: In which case, the construction of $\triangle $ is not possible?<br/>
Question 11 :
In $\Delta\, ABC$, if $AB = BC$ and $\angle\, B\, =\, 80^{\circ},$ then $\angle C\, =$ 
Question 12 :
If $E$ is a point on the side $CA$ of an equilateral triangle $ABC,$ such that $BE\perp CA,$ then $AB^{2}+BC^{2}+CA^{2}=$<br>
Question 13 :
The lengths of two sides of a triangle are $3 $ cm and $4 $ cm. Which of the following, can be the length of third side to form a triangle?
Question 14 :
The altitude of an equilateral triangle of side lenght of $2\sqrt{3}$ cm is:
Question 15 :
The product of the arithmetic mean of the lengths of the sides of a triangle and harmonic mean of the lengths of the altitudes of the triangle is equal to
