Do Now
Complete 3, 2, 1
3 things you learned about linear functions
2 things you would like to know more about
1 thing you still have a questions about
Step 1
• Pick up one color pencil.
• Write your name at the top with your color.
• Number the angles as follows
• Pass to the right
Step 2
• Label one pair of alternate interior angles
with stars.
• Pass to the right.
Step 3
• Label ONE pair of same side interior
angles with a circle.
• Pass to the right.
Step 4
• Label ONE pair of alternate exterior angles
with a square.
• Pass to the right.
Step 5
• Label ONE pair of corresponding angles
with a smiley face.
• Pass to the right.
On the back
• Solve the following problem.
• If the measure of angle 3 is x-27 and the
measure of angle 5 is 2x, find the value of
both angles.
X-27
2x
Finally. . .
• Review the work from each student. Ask
questions of each other if you do not
understand something.
• Choose the paper that your group feels is
the best representation of angle
relationships.
Small Group Work
• Complete activity from yesterday
• Homework - worksheet
Do Now- Use your whiteboards
Using the Triangle Sum Theorem,
find the measure of each angle in
degrees.
Exterior Angle Theorem
Supplies Needed:
Go Math – page 356
Straight Edge
In Pairs
Draw a large scalene triangle ABC on a piece of construction
paper.
Label the interior angles 1,2, and 3.
Draw all six of the exterior angles and label them angles 4-9.
NEXT. . .
Trace triangle ABC on another sheet of
paper and label its angles 1-3.
Cut out the triangle carefully and tear off the
three corners with the numbers on it.
1
2
3
NOW. . .
Place two of the torn remote interior angles
over its exterior angle.
What do you notice? Talk to your partner.
Be prepared to share what your partner
said.
With your partner
• Lets put together what we learned about
equations and what we learned about the
relationships of angles in a triangle. – page 358
• Find the measures of the angles using: Triangle
Sum Theorem – The three interior angles in a
triangle equal 180°.
• Exterior Angle Theorem – The measure of the
exterior angle is equal to the sum of its remote
interior angles.
Word Wall
• Please create a poster for the word wall:
• Choose one word
1.Interior Angle
2.Exterior Angle
3.Remote Interior Angle