          </figure>
                    </div>
                </div>

                <p>
                    $C$ is a <em>simple closed curve</em> if $z(t_1)\neq z(t_2)$ for $t_1\neq t_2$ and $z(a) = z(b).$

                </p>

                <div class="figure-container">
                    <div>
                        <figure>
                            <img src="../images/chp04/simple-closed-curve.svg" alt="Simple curve" title="Simple closed curve" style="width:100%;">
                           