State whether the statements are true (T) or false (F).

is a concave pentagon.

State whether the statements are true (T) or false (F).

If opposite angles of a quadrilateral are equal, it must be parallelogram.

The interior angles of the triangle are in the ratio 1:2:3, then the ratio of its exterior angles is 3:2:1.

State whether the statements are true (T) or false (F).

Diagonals of a rhombus are equal and perpendicular to each other.

State whether the statements are true (T) or false (F).

Diagonals of a rectangle are equal.