The locus of vertices of all isosceles triangles having a common base is ________.
the bisector of the common base of the triangles
the perpendicular bisector of the common base of the triangles
a line parallel to the common base of the triangle
a line parallel to the common base of the triangle which is 1 cm away from it
Describe the locus for questions 1 to 13 given below:
The locus of vertices of all isosceles triangles having a common base.
If the bisector of the exterior vertical angle of a triangle is parallel to the base, then it is