Q.1.
'Euclid' is associated with
Q.2.
In isosceles triangle any two angles are same?
Q.3.
A triangle with one right angle and two acute angles is called _______ angled triangle.
Q.4.
If in an equilateral triangle with side a, then the alt
Q.5.
In an isosceles triangle ABC if AC=BC and $${ AB }^{ 2 }={ 2 AC }^{ 2 },$$ then $$\angle C$$
Q.6.
The sides of a triangle are three consecutive  natural numbers and its largest the smallest one then the sides of triangle are 
Q.7.
 Two sides of a triangle are 7 cm and 25 cm, then the number of all possible integral values of third side of the triangle is 
Q.8.
From a light house L two ships P and Q are observed in directions south west and 5* easy of south respectively. At the same time Q is observed from point P south- east direction. If LP = 4 km, the distance between the ships is 
Q.9.
Sum of exterior angles of a triangles  obtained by extending it's sides in same direction is____
Q.10.
If the altitudes from two vertices of a triangle to the opposite sides are equal , then the triangle 
Q.11.
If the sides of triangle are 4 cm and 6 cm then the third side cannot be ... cm.
Q.12.
If one of the two equal sides of a triangle is 5 cm long. Then what can be the measure of the third side?