1. 10.1 Pulling a One-Eighty! Triangle Sum, Exterior Angle, and Exterior Angle Inequality Theorems
WARM UP
Solve for x.
What theorem did you use to do question 1?
Solve for y.
What did you need to know to answer question 3?
Circulate and see what kids have for this. Make sure that they are able to create some sort of ratio. There is no need to go over this as a class since they will be doing a similar one in the beginning of today’s lesson. Just use it as a quick formative assessment. Address student misconceptions in Problem 1, #1.

2. 10.1 Pulling a One-Eighty! Triangle Sum, Exterior Angle, and Exterior Angle Inequality Theorems
Lesson Opener as a class.
Volume 2 p. 503
Circulate and see what kids have for this. Make sure that they are able to create some sort of ratio. There is no need to go over this as a class since they will be doing a similar one in the beginning of today’s lesson. Just use it as a quick formative assessment. Address student misconceptions in Problem 1, #1.

3. 10.1 Pulling a One-Eighty! Triangle Sum, Exterior Angle, and Exterior Angle Inequality Theorems
Problem 1 Triangle Interior Angle Sums
Do #1 with your group
(pg 504)
You have 2:53 min.
Circulate and see what kids have for this. Make sure that they are able to create some sort of ratio. There is no need to go over this as a class since they will be doing a similar one in the beginning of today’s lesson. Just use it as a quick formative assessment. Address student misconceptions in Problem 1, #1.

4. 10.1 Pulling a One-Eighty! Triangle Sum, Exterior Angle, and Exterior Angle Inequality Theorems
Problem 1 Triangle Interior Angle Sums
The Triangle Sum Theorem states that the sum of the measures of the interior angles of a triangle is 180°.
Circulate and see what kids have for this. Make sure that they are able to create some sort of ratio. There is no need to go over this as a class since they will be doing a similar one in the beginning of today’s lesson. Just use it as a quick formative assessment. Address student misconceptions in Problem 1, #1.
What geometric figure is formed when the three interior angles of the triangle are placed adjacent to each other?
How many degrees are associated with the geometric figure formed when the three interior angles are placed adjacent to each other?

5. 10.1 Pulling a One-Eighty! Triangle Sum, Exterior Angle, and Exterior Angle Inequality Theorems
Problem 2 Analyzing Triangles
Do #1a-c with your group
(pg 504)
You have 4:56 min.
*You would need to use a ruler and a compass*
Circulate and see what kids have for this. Make sure that they are able to create some sort of ratio. There is no need to go over this as a class since they will be doing a similar one in the beginning of today’s lesson. Just use it as a quick formative assessment. Address student misconceptions in Problem 1, #1.

6. 10.1 Pulling a One-Eighty! Triangle Sum, Exterior Angle, and Exterior Angle Inequality Theorems
Problem 2 Analyzing Triangles
Measure the length of each side of the triangle. Label the side lengths in your diagram.
The longest side of the triangle lies opposite which interior angle?
Circulate and see what kids have for this. Make sure that they are able to create some sort of ratio. There is no need to go over this as a class since they will be doing a similar one in the beginning of today’s lesson. Just use it as a quick formative assessment. Address student misconceptions in Problem 1, #1.
The shortest side of the triangle lies opposite which interior angle?

7. 10.1 Pulling a One-Eighty! Triangle Sum, Exterior Angle, and Exterior Angle Inequality Theorems
Problem 2 Analyzing Triangles
Do #2-4 with your group
(pg )
You have 6:23 min.
Circulate and see what kids have for this. Make sure that they are able to create some sort of ratio. There is no need to go over this as a class since they will be doing a similar one in the beginning of today’s lesson. Just use it as a quick formative assessment. Address student misconceptions in Problem 1, #1.

8. 10.1 Pulling a One-Eighty! Triangle Sum, Exterior Angle, and Exterior Angle Inequality Theorems
Problem 2 Analyzing Triangles
What side is always the longest side in an obtuse triangle? Explain.
Circulate and see what kids have for this. Make sure that they are able to create some sort of ratio. There is no need to go over this as a class since they will be doing a similar one in the beginning of today’s lesson. Just use it as a quick formative assessment. Address student misconceptions in Problem 1, #1.
If two interior angles of a triangle are the same measure, how do the length of the sides opposite these angles compare to each other?
The shortest side of the triangle lies opposite which interior angle?

9. 10.1 Pulling a One-Eighty! Triangle Sum, Exterior Angle, and Exterior Angle Inequality Theorems
Problem 2 Analyzing Triangles
Circulate and see what kids have for this. Make sure that they are able to create some sort of ratio. There is no need to go over this as a class since they will be doing a similar one in the beginning of today’s lesson. Just use it as a quick formative assessment. Address student misconceptions in Problem 1, #1.

10. 10.1 Pulling a One-Eighty! Triangle Sum, Exterior Angle, and Exterior Angle Inequality Theorems
Problem 3 Exterior Angles
Do #1-11 with your group
(pg 508)
You have 5:45 min.
Circulate and see what kids have for this. Make sure that they are able to create some sort of ratio. There is no need to go over this as a class since they will be doing a similar one in the beginning of today’s lesson. Just use it as a quick formative assessment. Address student misconceptions in Problem 1, #1.

11. 10.1 Pulling a One-Eighty! Triangle Sum, Exterior Angle, and Exterior Angle Inequality Theorems
Problem 3 Exterior Angles
Circulate and see what kids have for this. Make sure that they are able to create some sort of ratio. There is no need to go over this as a class since they will be doing a similar one in the beginning of today’s lesson. Just use it as a quick formative assessment. Address student misconceptions in Problem 1, #1.

12. 10.1 Pulling a One-Eighty! Triangle Sum, Exterior Angle, and Exterior Angle Inequality Theorems
Problem 3 Exterior Angles
Circulate and see what kids have for this. Make sure that they are able to create some sort of ratio. There is no need to go over this as a class since they will be doing a similar one in the beginning of today’s lesson. Just use it as a quick formative assessment. Address student misconceptions in Problem 1, #1.

13. 10.1 Pulling a One-Eighty! Triangle Sum, Exterior Angle, and Exterior Angle Inequality Theorems
Problem 3 Exterior Angles
Do #15 with your group
(pg 511)
You have 2:45 min.
Circulate and see what kids have for this. Make sure that they are able to create some sort of ratio. There is no need to go over this as a class since they will be doing a similar one in the beginning of today’s lesson. Just use it as a quick formative assessment. Address student misconceptions in Problem 1, #1.

14. 10.1 Pulling a One-Eighty! Triangle Sum, Exterior Angle, and Exterior Angle Inequality Theorems
Problem 3 Exterior Angles
Circulate and see what kids have for this. Make sure that they are able to create some sort of ratio. There is no need to go over this as a class since they will be doing a similar one in the beginning of today’s lesson. Just use it as a quick formative assessment. Address student misconceptions in Problem 1, #1.

15. 9.3 Special Angles Complements, Supplements, Midpoints, Perpendiculars, and Perpendicular Bisectors
Homework:
Due Monday
Finish Weekly Math #23
Have 4 students come up to draw on whiteboard. Do this as whole class.