Angle Relationships

1
Angle Relationships

• What do angles tell us?
• How can angles help us?

2
Search and Rescue

• Throughout the next week you will be developing
  skills in mathematics.
• These skills provide an efficient means to
  communicate navigation and location.

3
Giving Good Directions

• How do you give good directions?
• What are some key words you use?
• What are some difficulties when communicating
  directions?

4
Developing a Strategy

• Turn to page 80 in Mathematics Book 2.
• Compass heading tells us direction using North,
  South, East and West.
• This is only 4 directions, will we need more?
• How can we be more descriptive than (N, S, E,
  W) in our explanation of direction?

5
Use Angles!

• Start from 0º N and go clockwise to find
  direction.

6
Questions

• Question 12 on pg. 80
• Question 13 on pg. 81
• Question 14 on pg. 81

7
More Angle Names

• Two angles are Supplementary if their sum is
  180º.
• Two angles are Complementary if their angles sum
  to 90º.

8
Questions

• Question 15 on pg. 81
• Question 16 on pg. 81
• Question 17 on pg. 82
• Question 18 on pg. 83

9
Labsheet 1B
10
Labsheet 1C
11
Vocabulary Review

• Angle
• Ray
• Vertex
• Degree

12
Vocabulary Review

• Right angle
• Straight angle
• Acute angle
• Obtuse angle
• Supplementary angles
• Complementary angles