Symmetry of an isosceles trapezium

An isosceles trapezium has

Symmetry of an isosceles triangle

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

If A(2,0),B(0,2) and C(0,7) are three vertices,thaken in order of an isosceles trapezium ABCD in which AB|DC. find the coordinates of D.

The area of an isosceles trapezium is 176 cm^(2) and the height is (2)/(11) of the sum of its parallel sides. If the ratio of the length of the parallel sides be 4 : 7 , then the length of a diagonal is :

Draw a line of symmetry of an isosceles right triangle.

State the number of lines of symmetry for an isosceles triangle.