Congruence and Similarity

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Congruenceand Similarity

• Form 1 Mathematics
• Chapter 11

2
Reminder

• Lesson requirement
• 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
• 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
• 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

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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!!!!!!

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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!!!!!!

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Congruence (??, p.172)

• Congruent figures (????)

1. Figures having the same shape and size are
called congruent figures. e.g. Figures X and Y
below are congruent figures.
2. Two congruent figures can fit exactly on each
other.
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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
• Detention
• SHW (I)
• 8th May (Wednesday)
• SHW (II)
• 14th May (Tuesday)
• OBQ
• 15th May (Wednesday)
• CBQ
• 20th May (Monday)

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• Enjoy the world of Mathematics!