Foundation November 2018 Unit 1 Q21
21.
Diagram not drawn to scale
Line AB is parallel to line PQ.
(a) Find the size of each of the angles \(a\), \(b\) and \(c\). [3]
\(a\) = …………… ° \(b\) = …………… ° \(c\) = …………… °
(b) Find the size of each of the angles \(x\) and \(y\).
Hence give the special name for triangle LMN. [3]
Hence give the special name for triangle LMN. [3]
\(x\) = …………… ° \(y\) = …………… °
The special name for triangle LMN is ……………
| Scheme | Marks | Comments |
|---|---|---|
| a = 52° | B1 | |
| b = 52° | B1 | OR F.T. b = ‘their a’. |
| c = 64° | B1 |
| Scheme | Marks | Comments |
|---|---|---|
| x = 64° | B1 | OR F.T. x = 'their c'. |
| y = 64° | B1 | OR F.T. y = 180 – 52 – ‘their x’. OR F.T. y = 180 – 64 – ‘their a’ OR F.T. y = 180 – ‘their a’ – ‘their c’ OR F.T. y = 180 – ‘their b’ – ‘their c’ |
| Isosceles | B1 | CAO Dependent on values given to both x and y AND two equal angles in triangle LMN AND x + y = 128. |