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secondary 3 | E Maths
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Date Posted: 3 years ago
Views: 324
If we draw a line connecting E to C, we will realise that
- ECD is half of EOD, because an angle at the centre is twice an angle at the circumference
- ECB = 180 - EAB, because these two angles are angles in opposite segments (or opposite sides of a cyclic quadrilateral)
So, ECD = 29 and ECB = 80.
BCD is 109.
- ECD is half of EOD, because an angle at the centre is twice an angle at the circumference
- ECB = 180 - EAB, because these two angles are angles in opposite segments (or opposite sides of a cyclic quadrilateral)
So, ECD = 29 and ECB = 80.
BCD is 109.
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Hope this helps
Date Posted:
3 years ago
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