[C#/WPF] Viewbox 엘리먼트 사용하기

<Page
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Background="White">
    <Viewbox
        Width="300"
        Height="300">
        <Canvas
            Width="100"
            Height="100">
            <Ellipse Canvas.Left="5"  Canvas.Top="5"  Width="90" Height="90" Stroke="Black" />
            <Ellipse Canvas.Left="25" Canvas.Top="30" Width="10" Height="10" Stroke="Black" />
            <Ellipse Canvas.Left="65" Canvas.Top="30" Width="10" Height="10" Stroke="Black" />
            <Polyline Stroke="Black" Points="25 25 30 20 35 25"       />
            <Polyline Stroke="Black" Points="65 25 70 20 75 25"       />
            <Polyline Stroke="Black" Points="50 40 45 60 55 60 50 40" />
            <Polyline Stroke="Black" Points="25 70 50 80 75 70"       />
        </Canvas>
    </Viewbox>
</Page>