1. Please get the warm up off the back table3d
2a - 1
4mp 3b
12p - 3q
-4c + 4 r
2q + 5
x – 3t
3f + 10g
f – 5h
3r – 2s + 4
x - y

2. BC = 8.5
AC = 8
x = 10
x = 10
x = 6
BC = 25
x = 8
x = 13

3. Just for fun… do these (on the back of your warm up)1 3 2 4 5
Name 2 pair of alternate interior angles
<5 & < and <4 & <1
2. What is the sum of m<1 + m<2 + m<3?
180°
If m<4 = 65° and m<5 = 50°, what is m<2?
65°
90°
40°
130°
50°
50°
4. Find all the angle measures
40°

4. Flashcards Pick a partner Get a set of flashcards
Work on identifying angles
You will have 10 minutes Go

5. Just a little quickie…
Please get pg 173 off the back desk and do problems 5-20….
We’re just getting a head start on today’s assignment…
We’ll have notes in 15 minutes… Go

6. Triangle Sum Theorem & Exterior Angle Theorem

7. Triangle Sum Theorem
The sum of the angle measures in a triangle equal 180° 3 2 1
m<1 + m<2 + m<3 = 180°

8. Exterior Angle Theorem (your new best friend)
The measure of an exterior angle in a triangle is the sum of the measures of the 2 remote interior angles
exterior angle
remote interior
angles 3 2 1 4
m<4 = m<1 + m<2

9. an example with numbers
find x & y
82°
x = 68°
y = 112°
30° x y
40x
10x2
30x
find all the angle measures
Do you hear the sirens?????
80°, 60°, 40°

10. White boards Please get, or have someone get for you; whiteboard
marker
eraser

11. Finish the assignment
On the same paper as 5-20,
Please do on page 174