1. Congruence and Similarity
Form 1 Mathematics
Chapter 11

2. Reminder Lesson requirement Before lessons start
Textbook 1B
Workbook 1B
Notebook
Before lessons start
Desks in good order!
No rubbish around!
No toilets!
Keep your folder at home
Prepare for Final Exam

3. Result of OBQ (Ch. 12) Result of Open Book Quiz Major Problems
Full mark: 40 and 10 bonus
Highest: 47
Lowest: 17
Average: 30.0 (Highest!)
Number of students between 10 – 19: 2
Number of students between 0 – 9: 0
Major Problems
No tools for measuring angles!
Calculate the angle and % wrongly
Try to do bonus! Sometimes it might be easy!

4. Result of OBQ (Ch. 12) Result of Open Book Quiz 9th place: LAU Chun On
8th place: CHEN Yi, David
7th place: FU Ling Yin, Larry
6th place: CHAN Tsz Long, Sam
5th place: WU SHAN Hao Yi
4th place: YUEN Tin Wai, Timmy
3rd place: LIN Long Chak, Vincent
2nd place: LAM Long Yin, Ken
1st place: LI Sai Kong
Congratulations!!!!!! Well done!!!!!!

5. Result of CBQ (Ch. 12) Result of Close Book Quiz Major Problems
Full mark: 40 and 10 bonus
Highest: 49
Lowest: 19
Average: 33.0 (Better Highest!)
Number of students between 10 – 19: 1
Number of students between 0 – 9: 0
Major Problems
Put the “leaf” in order!
Calculate the angle and % carelessly
Write (Copy) the correct title of the diagram

6. Result of CBQ (Ch. 12) Result of Close Book Quiz
8th place: LAW Cheuk Hang Ellis
TANG Yiu Cheung Harald
7th place: FU Ling Yin, Larry
6th place: CHEN Yi, David
5th place: LI Ming Chun, Edward
4th place: LAM Long Yin, Ken
3rd place: LI Sai Kong
2nd place: YUEN Tin Wai, Timmy
1st place: WU SHAN Hao Yi
All got 40 marks!!!
Congratulations!!!!!! Well done!!!!!!

7. Result of CBQ (Ch. 12)
Result of Close Book Quiz – greatest improvement
7th place: NG Ho Hei, Nicholas
TSUI Wing Chak, Gabriel
WU SHAN Hao Yi
4th place: CHAN Wa Pan, Ben
CHOI King Shing, Walker
TANG Yiu Cheung Harald
3rd place: CHOW Cheuk Man Champan
2nd place: LAW Cheuk Hang Ellis
1st place: KO Ka Chung Boston
Congratulations!!!!!! Well done!!!!!!

8. Congruence (全等, p.172) Congruent figures (全等圖形)
1. Figures having the same shape and size are called congruent figures.
e.g. Figures X and Y below are congruent figures. X Y
2. Two congruent figures can fit exactly on each other.

9. Time for Practice Page 173 of Textbook 1B
Class Practice
Pages 176 – 177 of Textbook 1B
Questions 1 – 2
Page 73 of Workbook 1B
Question 1

10. Reminder Missing HW SHW (I) SHW (II) OBQ CBQ Detention
8th May (Wednesday)
SHW (II)
14th May (Tuesday)
OBQ
15th May (Wednesday)
CBQ
20th May (Monday)

11. Enjoy the world of Mathematics!
Ronald HUI