Topic Content:
- Angles between Lines and Triangles
- Angles on a Straight Line
- Complementary Angles
- Supplementary Angles
- Vertically Opposite Angles
- Angles at a Point
- Angles in Parallel Lines
- Angles in Triangles
1. Angles on a Straight Line:
In the diagram above
⇒ \( \scriptsize \hat{AOB} \:+\: \hat{BOC} \: + \: \hat{COD} = 180^o\)
That is, a + b + c = 180°
2. Complementary Angles:
a + b = 90°
Example: a = 40°, b = 50°
3. Supplementary Angles:
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