1. February 9, Math 102
OBJECTIVE: Students will be able to find a missing angle when given angles of a quadrilateral
AIM: How do we use subtraction to solve for the unknown angle of a quadrilateral?
STANDARDS: 7.G.7
PRIOR KNOWLEDGE: Solve for n
n = 360

2. The sum of the angles of any triangle is 1800
MINI LESSON:
1250
1100
750 A
quadrilateral
The sum of the angles of any triangle is 1800
The sum of the angles of any quadrilateral is 3600

3. To find the measure of angle A above:
MINI LESSON:
1250
1100
750 A
quadrilateral
To find the measure of angle A above:
Step 1 Add the three angle measures you know
Step 2 Subtract the sum from 3600

4. T 95 60 80
What is the measure of angle T in the diagram above?

5. B
103 65 82
What is the measure of angle B in the diagram above?

6. INDEPENDENT WORK: Handout

7. T 95 60 80