Angle Relationships What do angles tell us? How can angles help us?

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Presentation transcript:

Angle Relationships What do angles tell us? How can angles help us?

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.

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

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?

Use Angles! Start from 0 º N and go clockwise to find direction.

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

More Angle Names Two angles are Supplementary if their sum is 180º. Two angles are Complementary if their angles sum to 90º.

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

Labsheet 1B

Labsheet 1C

Vocabulary Review Angle = Ray = Vertex = Degree =

Vocabulary Review Right angle Straight angle Acute angle Obtuse angle Supplementary angles Complementary angles