Enlargement

The following diagram show two shapes that have been enlarged. Determine the centre of enlargement in each case.

The diagram shows the triangle ABC and the point O. Enlarge the triangle with scale factor 3, using O as the centre of enlargement.

A rectangle has sides of lengths $2 \mathrm{cm} \mathrm{and} 4 \mathrm{cm}$. It is enlarged with scale factor $2$. Draw the original rectangle and the enlarged rectangle.

A rectangle has sides of lengths 2 cm and 3 cm. It is enlarged with scale factor 3.
Draw the original rectangle and the enlarged rectangle.

Cotyledons are also called-