Intermediate November 2018 Unit 1 Q8
8.
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 FT b = ‘their a’. |
| c = 64° | B1 |
| Scheme | Marks | Comments |
|---|---|---|
| x = 64° | B1 | OR FT x = 'their c'. |
| y = 64° | B1 | OR FT y = 180 – 52 – ‘their x’. OR FT y = 180 – 64 – ‘their a’ OR FT y = 180 – ‘their a’ – ‘their c’ OR FT y = 180 – ‘their b’ – ‘their c’ |
| Isosceles. | B1 | C.A.O. Dependent on values given for both x and y AND two equal angles in triangle LMN AND x + y = 128. |