Getting Started
===============

Quick Reference
---------------

circle
~~~~~~

The function ``circle`` draws a circle.

It takes three arguments, the x and y co-ordinates of the center and the diameter.

   circle(200, 100, 50)

rect
~~~~

The function ``rect`` draws a rectangle. It takes four arguments, the x and y
co-ordinates of the top-left corner and width and height of the rectangle.
::

    rect(200, 100, 50, 75);


Exercises
---------

Write programs to draw the following patterns.

**Problem 1.1**

.. figure:: images/three-circles-in-a-line.png
   :scale: 50 %
   :alt: Three circles in a line

   Three circles in a line.

**Problem 1.2**

.. figure:: images/concentric-circles.png
   :scale: 50 %
   :alt: Concentric Circles

   Three concentric circles.

**Problem 1.3**

.. figure:: images/touching-circles.png
   :scale: 50 %
   :alt: Touching Circles

   Three circles touching at bottom.

**Problem 1.4**

.. figure:: images/two-small-circles-in-a-big-circle.png
   :scale: 50 %
   :alt: Two small circles in a big circle

   Two small circles in a big circle.

**Problem 1.5**

.. figure:: images/plus.png
   :scale: 50 %
   :alt: plus

   Plus/cross pattern.

**Problem 1.6**

.. figure:: images/corner-squares.png
   :scale: 25%
   :alt: four corner squares

   Four small squares touch the four corners of a big square.

**Problem 1.7**

.. figure:: images/circle-in-a-square.png
   :scale: 50 %
   :alt: circle in a square.

   Circle in a square.

**Problem 1.8**

.. figure:: images/square-in-a-circle.png
   :scale: 25%
   :alt: square in a circle.

   Square in a circle.