# Angles and Arcs in Circles INB Pages

I never have time to post my INB pages during the school year!  Today, I want to share the pages that I made for the beginning of my circles unit.

This was the first lesson in my circles unit, so I needed to introduce some vocabulary first.  I gave my students a fill-in-the-blank page with diagrams so that we could discuss the vocabulary as we went.

After that, we talked about arc measures, the Arc Addition Postulate, and congruent angles and arcs.  I compiled it all into one foldable.

I included the explanations on the front of the foldable so that I would have room for examples inside.  Inside each flap, we did two examples together and I had them work two examples with their partners.  This foldable went pretty fast as we worked through it together in class.  Most of my students thought this lesson was pretty easy since I didn't include much algebra in it.

After the foldable, I worked this spherical problem with my honors students.  They were shocked that I was "bringing back trig".  The fact that the radius of the sphere could be drawn to different points blew their minds at first.  I really liked this problem and included it on their test with different numbers.

You can find this foldable here, in my Teachers pay Teachers store.

#### 1 comment

1. You have a very interesting site for learning mathematics. I remember how I studied herself then I hated this subject and asked my parents "do my math for me, please!" or something like this. But I prefer algebra more than geometry, because everything was logical and did not need to draw different figures.