1 / 10

1/5/11 Geometry Bell Ringer

1/5/11 Geometry Bell Ringer. Grab today’s materials from up front. Get out your homework (I’ll be around to check it); IF IT’S NOT OUT AND YOU’RE NOT ON YOUR BELL RINGER WHEN I WALK BY YOU WILL NOT GET CREDIT. Write the six congruency statements, given that.

Download Presentation

1/5/11 Geometry Bell Ringer

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. 1/5/11 Geometry Bell Ringer Grab today’s materials from up front. Get out your homework (I’ll be around to check it); IF IT’S NOT OUT AND YOU’RE NOT ON YOUR BELL RINGER WHEN I WALK BY YOU WILL NOT GET CREDIT. Write the six congruency statements, given that Homework: Finish 1/5 Indep. Pract.

  2. Bell Ringer Answer • MN QP • MP QN • NP PN Q M N P N P

  3. 1/5 News and Notes • Test takers – You live to fight another day… You will take the test TOMORROW (I have a meeting after school). If this is a problem let me know. • Perfection Award: 4th Period!

  4. 1/5 Agenda • I CAN identify SSS, SSA, SAS, ASA, SAA, AAA in a drawing and define included angles and sides. • Bell Ringer • New Material – Motivation, One Example, Vocab. • Guided Practice • Independent Practice

  5. New Material – Motivation • Yesterday we did this: And it was a pain. It felt like a lot of work to show that 2 triangles are congruent. Today we will talk about potentialshortcuts to PROVE that two triangles are congruent.

  6. SHORTCUT! • Rather than showing ALL 6 parts are congruent, we only have to SHOW 3. • Now there are 6 possible combinations of 3 sides and angles that could work: • 1. SSS • 2. SAS • 3. SSA • 4. ASA • 5. SAA • 6. AAA

  7. Quick Examples of each • Agile Mind 10.E.1.6 • In your vocab draw examples of each of the possible postulates. • (SAS, SAA) KEY: When identifying the shortcuts you can skip over AT MOST 1 SIDE OR ANGLE!!! ASA, not AAS

  8. Examples: • Draw the included angle between these two sides and then write the congruence shortcut that is shown: • Draw the included side between these two angles and then write the congruence shortcut that is shown: SAS ASA

  9. Guided Practice • Determine which combo is shown in each of the 5 drawings.

  10. Independent Practice • You now have the rest of class to work on the independent practice. Your work will be checked for progress when you walk out.

More Related