Foundation June 2019 Unit 1 Q16
16. ABCD is a rectangle.
AB is parallel to EF.
AC, CE and DG are straight lines.
Diagram not drawn to scale
Find the size of each of the angles \(a\), \(b\) and \(c\). [4]
\(a\) = …………… ° \(b\) = …………… ° \(c\) = …………… °
| Scheme | Marks | Comments |
|---|---|---|
| (a =) \(\dfrac{180 - 110}{2}\) or equivalent. | M1 | |
| = 35(°) | A1 | |
| b (= 180 – 90 – 35) = 55(°) | B1 | OR FT 90 − ‘their a’. |
| c (= 90 + 55) 145(°) OR c (= 180 − 35) 145(°) | B1 | OR FT 90 + ‘their b’. OR FT 180 − ‘their a’ |