Isosceles Triangles

This is a good review of what we learned just prior to the break.  Watch this video to review some of the key concepts in isosceles triangles.  The example that follows is also a challenging practice.

Using SSS

One of the easiest postulates to use is the Side-Side-Side Postulate.  This video link gives us a quick overview of what we learned.

Using SAS

Very similar in concept to the ASA Postulate, here is a video link to the description of the Side-Angle-Side Postulate.  Be sure to understand the difference between SAS and ASA.

Using ASA

Here is a video link to the description of Angle-Side-Angle Postulate along with an example.

Constructing Perpendicular Line (part 2)

In this video, we construct a perpendicular line from a point to a line.  See if you can emulate the video with your own drawings.

Constructing Perpendicular Lines (part 1)

One neat use of geometry skills is construction.  Using simply a ruler and compass, you can create some important figures.  Check out this video for one example.

TI-Nspire

One piece of new technology that we have incorporated into our classroom this year is the TI-Nspire calculator.  While it'd be great if all of us have that handheld, for now, the software that I use can help us understand some concepts.  This was a screen shot of the demostration on exterior angles.

Parallel Lines Review

This is a slide from our class notes on a lesson in parallel lines.  Make sure you know where the answers are coming from.  Review key terms: linear pair, vertical angles, corresponding angles, same-side interior/exterior angles, and alternate interior/exterior angles.

Check for Understanding

Here is a slide that we used to review in class.  See if you can get 10-for-10 this time!