Question:
A semicircle is drawn on a square grid.
(a) Measure and write down the length of the radius of the semicircle.
(b) Draw a rectangle ABCD such that the length of BC is equal to the length of the radius.
(c) Join BD and measure ∠ABD.
Solution:
![P6 / Catholic High / 2018 / SA1 / Paper 2 – Q10 [3 marks] Reader Submission #9](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2021/05/Random_9-Qns.jpg?resize=400%2C260&ssl=1)