Learn about Sinuate Margins

What is a sinuate margin?
a leaf with a sinuate margin has wave-like indentions (1)

What does a sinuate margin look like?
(see pic here)

Resources
1. https://i.pinimg.com/originals/de/6e/30/de6e3090f850ebbeccb8e59a700efe7f.jpg