SETUP DIRECTIONS Please take out Assignment Calendar and

SETUP DIRECTIONS Please take out Assignment Calendar, and Copy Tonight’s HW Materials on your desk: Post-its, HW: Segment and Angle Addition Begin your drill! (located on the back table)

HGEO Warm-up: 9/21 and 9/22 1) Name: __________ Date: ______ Pd: _____ Please complete the drill problems on the colored poster paper that correspond to the color of your post-it notes. Example: if I have a blue and red post-it, I’m going to complete the problems on blue and red poster paper. 2) Write your name at the top. 3) Write out the equation. 4) Solve for the missing variable and any additional angle or segment measures. 5) When you are finished, place the post-its directly on the corresponding colored poster paper.

Mastery Objective We will use the segment addition postulate to determine the length of a segment(s). We will use the angle addition postulate to determine the measure of an angle(s).

Agenda Copy HW/Drill: Special Segments & Algebra Check HW: Segment and Angle Addition Graded Papers/Missing Work Reports Questions: Segment Addition Postulate or Angle Addition Postulate Group Activity Capture and Categorize Angles Independent Practice Seek and Solve Practice Class Activity Tic-Tac-Toe: Special Centers

Homework Silly Segments and Awesome Angles HW

This Week in Geometry Mon 9/21, Tues 9/22 Review Segment and Angle Addition Wed 9/23, Thurs 9/24 Transformations: Reflections and Translations Fri 9/25, Tues 9/29 Transformations: Rotations and Review

HW Questions What questions did you have trouble with on the homework?

Graded Papers and Missing Work Reports Missing Work is due by Wednesday of this week.

Graded Papers and Missing Work Reports Progress Reports will arrive on Friday!

Capture and Categorize Angles

Capture and Categorize Angles 1. Find the missing envelope hidden around the room, labeled with your group name. 2. Once found, empty out the contents. 3. Separate and categorize the contents. 4. Using the whiteboards provided, write a reason to justify your group’s categorization. 5. Signal your instructor when you have finished. 6. Your instructor will give you additional directions.

Capture and Categorize Angles Excellent! Congratulations on categorizing your angles! Now, you must find all the missing variables and write your results below… It’s a race to the finish, so hurry it up! Variables X= Y= Z= A= B= C= D= E= Solution What Type of Angles Are We?

Seek and Solve Activity

Seek and Solve Directions Start at your own individual problem. Write down the letter at the top. Complete the problem. Circle your answer. Search for the answer on the top of another page. When found, complete that problem. Repeat!

Tic-Tac-Toe Review

Tic-Tac-Toe: Special Centers Write down the following words in any order on your tic-tac-toe board: Concurrent Circumcenter Orthocenter Incenter Centroid Angle Bisector Perpendicular Bisector Median Altitude

Tic-Tac-Toe: Special Centers First person with three in a row wins!

Question 1 I am a special segment that comes from a vertex and splits to angles in half.

Question 2 I am a special center that results from concurrent perpendicular bisectors.

Question 3 I am a special segment whose endpoints comes from a vertex and the midpoint of two equal sides.

Question 4 I am a special center that results in concurrent medians.

Question 5 I am a special center that results in concurrent angle bisectors.

Question 6 Three or more lines that cross at a single point are called __________.

Question 7 I am a special segment whose endpoints come from a vertex and a right angle on the opposite side.

Question 8 I am a special segment who creates a right angle and two equal segments.

Question 9 I am a special center that results from concurrent altitudes.

3 -2 -1 Summary • Name 3 things that you learned today. • Name 2 questions you still have. • Name 1 thing that was interesting in today’s lesson.