Just for fun…do these

(on the back of your warm up)1. Name 2 pair of alternate interior angles

<5 & <3 and <4 & <12. What is the sum of m<1 + m<2 + m<3?

180°3. If m<4 = 65° and m<5 = 50°, what is m<2?

65°

1 32

4 5

4. Find all the angle measures50°

40°

90°

40° 40°

90° 130°

50°

50°

Let’s grade your vocab worksheets

♥ Word search/Crossword/Mult Choice

Flashcards

Pick a partner

Get a set of flashcards

Work on identifying angles

You will have 10 minutes

Go

Just a little quickie…

♥ Please get pg 173 off the front 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

3.5 Triangle Sum Theorem

&Exterior Angle Theorem

Triangle Sum Theorem

The sum of the angle measures in a triangle equal 180°

32

1

m<1 + m<2 + m<3 = 180°

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

3

2

1 4

exterior angle

remote interior

angles

m<4 = m<1 + m<2

an example with numbers

x

82°

30° y

find x & y

x = 68°

y = 112°

40x 10x2

30x find all the angle measures

80°, 60°, 40°

Do you hear the sirens?????

White boards

Please get, or have someone get for you;

whiteboard

marker

eraser

Finishthe

assignment

On the same paper as 5-20,

Please do 21-37 on page 174