Why I can't see the end of mine line?

Question

<svg whidth="350" height="200">
<line x1="30" y1="30" x2="300" y2="170" style="stroke:#000000; stroke-linecap:round; stroke-width:20"/>
</svg>

Answer 1

Because you wrote whidth="350" instead of width="350". There is an unnessesary 'h'. Delete it and you can see the end of the line.