HKCEE - 2011 - Paper 2 -

Ans: (a) $\Delta AED\sim\Delta BEC$, $AE=6\text{ cm}$ (b)

Ans: A
I is true. Note that the sum of all exterior angles of al

Ans: (b) (i) $3$ (ii) $4$

1. In $\Delta EBC$,

   $\begin{array}{l

Ans: C
I is true. The interior angle of the regular $n$-sided

Ans: (b) Yes

1. In $\Delta ABC$ and $\Delta BDC$,

   $\begin{arra

Ans: C
Consider $\Delta DAE$ and $\Delta DCG$,

$\begin{arr

Ans: C
I is false.

$\begin{array}{rcl}
\dfrac{(n-2)\time

Ans: (b) Yes (c) $12\text{ cm}$

1. In $\Delta ABE$ and $\Delta B

Ans: A
I is true. Let $n$ be the number of sides of the regular p

Ans: (b) (i) $12\text{ cm}$ (ii) Yes

1. In $\Delta ADE$,

   $\begi

Ans: B
Add a straight line $DE$ passing through $C$ such that

Ans: D
In $\Delta ABD$,

$\begin{array}{rcl}
AB^2 + BD^2 �

Ans: A
Since $ABCD$ is a parallelogram, then $AD\text{//}B

Ans: B
$\begin{array}{rcl}
(n-2)\times 180^\circ &

Ans: (b) $4\pi\text{ cm}^2$

1. In $\Delta OPS$ and $\Delta ORS

Ans: D

Method 1:

In $\Delta ACD$ and $\Delta BDE$,

$\angle CA