Angles and Parallel Lines 1

posted by Mr Johari

source: GCSEBitesize

Task:

An angle can be defined as two rays or two line segments having a common end point. The endpoint becomes known as the vertex. An angle occurs when two rays meet or unite at the same endpoint.


1. How may degrees are there in one full turn?

2. Imagine you are facing North. You turn clockwise through 90 degrees. Which direction are you facing now?

3. Imagine the capital letter M. What letter does it look like when it's rotated 180 degrees?

4. An angle less than 90 degrees is known as ...

5. An angle between 90 degrees and 180 degrees is known as ...

6. If two of the angles inside a triangle are 90 degrees and 50 degrees, what is the third angle? What angle property/properties did you use in you reasoning?

7. Are the lines in the capital letter L parallel or perpendicular?

8. Will two parallel lines ever cross? Why?

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