<Window x:Class="RectangleShape" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Rectangles" Height="340" Width="200"> <Grid> <StackPanel> <TextBlock Text="RadiusX = 0, RadiusY = 0:" Margin="10 10 10 5" /> <Rectangle Width="150" Height="70" Fill="LightGray" Stroke="Black" /> <TextBlock Text="RadiusX = 20, RadiusY = 10:" Margin="10 10 10 5" /> <Rectangle Width="150" Height="70" RadiusX="20" RadiusY="10" Fill="LightGray" Stroke="Black" /> <TextBlock Text="RadiusX = 75, RadiusY = 35:" Margin="10 10 10 5" /> <Rectangle Width="150" Height="70" RadiusX="75" RadiusY="35" Fill="LightGray" Stroke="Black" /> </StackPanel> </Grid> </Window>