Examine each of the following figures, carefully, and then draw line(s) of symmetry if possible :

(i)

(ii)

(iii)

(iv)

(v)

(vi)

Draw lines(s) of symmetry for each of the following letters :

Construct a triangle XYZ in which :
XY = YZ = ZX = 4.5cm.

Draw all its lines of symmetry.

Construct a triangle PQR in which :
PQ = QR = 4.2 cm and ∠PQR = 90°.

Draw all its lines of symmetry.