Draw the following shapes.

1. A circle with its diameter indicated.
2. A right-angled triangle with two equal sides of about two centimetres in length.
   Draw a small circle at the centre of the triangle and then draw lines from the centre of the circle to each of the angles of the triangle.
3. A rectangle with diagonal lines joining opposite angles.
4. An octagon with equal sides. Draw an oval in the middle of the octagon.
5. A cube of roughly 3cm by 3cm by 3cm.