Question

Is HTML5 backwards compatible XHTML?

Answer 1

xhtml is backwarded more in compared to html5

Answer 2

Backward compatible : It refers to a hardware or a software system that can successfully use interfaces and data from earlier versions of the system or with other systems.

HTML5 is Hypertext Markup Language used for structuring and presenting content on world wide web.

XHTML is Extensible Hypertext Markup Language, a part of XML markup language families. It is the reformulation of HTML4 in XML family.

XHTML is little strict compared to HTML5.

YES, HTML5 is backwards compatible with XHTML.