Symmetry of an isosceles trapezium

An isosceles trapezium has

Symmetry of an isosceles triangle

Match the following {:("(a) Line of symmetry in isosceles trapezium" ,,- 90^(@)), ("(b) Line of symmetry in circle",,-72^(@)),("(c) Angle of rotation in square",, -"Centroid"),("(d) Angle of rotation in regualr pentagon",,-"Intersection of diagonals"),("(e) Centre of rotation in rhombus",,-"infinite"),("(f) Centre of rotation in equilateral triangle",,-1):}

The number of lines of symmetry of an isosceles triangle is (a) 0 (b) 1 (c) 2 (d) 3

The number of lines of symmetry of an isosceles triangle is (a) 0 (b) 1 (c) 2 (d) 3

Lines of symmetry of an isosceles triangle

Lines of symmetry of an isosceles triangle

What other name can you give to the line of symmetry of an isosceles triangle?