Elmo and Tango are playing in the dog park today.

And there's a new math mystery.

We need your help.

Elmo and Tango are looking for a mystery toy

to play with.

It's shaped like a circle.

A circle is a shape that's round and has no angles.

Come help Elmo and Tango find it.

(Tango barks)

A stick, well we can play fetch with a stick

and it has no angles, but the stick isn't shaped

like a circle.

Let's keep trying.

(Tango barks)

Somebody left a coloring book.

Elmo loves coloring books.

This has two short sides, two long sides and four angles.

Elmo thinks the coloring book is shaped

like a rectangle, not a circle.

Oh, but we can't give up now Tango.

(Tango barks)

Look, it's Tango's ball.

The ball is round with now angles.

Yeah.

The ball is shaped like a circle.

We did it Tango, we found the mystery toy.

Good girl.

Thank you for your help.

Come on, let's play Tango.

(Tango barks)

Bye bye, Elmo loves you.