1. 8th GRADE Illustrating Triangle Congruence (M8GE-IIID-1)
THIRD QUARTER
8th GRADE
MATHEMATICS 8
Illustrating Triangle Congruence
(M8GE-IIID-1)
Mark Anthony A. Mapula
Teacher II

2. OBJECTIVES: Here’s what you will learn for today:
Discuss the idea of congruence.
Illustrate triangle congruence.

3. LET’S PLAY A GAME! BRING ME THE FOLLOWING OBJECTS: PAIR OF EARRINGS
KING'S WISH
BRING ME THE FOLLOWING OBJECTS:
PAIR OF EARRINGS
PAIR OF SHOES
EYE GLASSES
PAIR OF NOTEBOOKS

4. TO WHOM SHOULD I PAIR
At a count of five, find your partner holding the same shape of triangle as yours and shout “BASIC LANG”! if you are done. Just stay with your partner for some questions/instructions.

5. TO WHOM SHOULD I PAIR 01
Name your triangles.

6. What kind of triangles are they?
TO WHOM SHOULD I PAIR 02
What kind of triangles are they?

7. Which parts of one triangle corresponds to the other?
TO WHOM SHOULD I PAIR 03
Which parts of one triangle corresponds to the other?

8. What is the symbol for correspondence?
TO WHOM SHOULD I PAIR 04
What is the symbol for correspondence?

9. Why did you say that they are congruent?
TO WHOM SHOULD I PAIR 05
Why did you say that they are congruent?

10. What is the symbol for congruence?
TO WHOM SHOULD I PAIR 06
What is the symbol for congruence?

11. Answer the following questions:
LET’S PROCESS!
Answer the following questions:
What are congruent triangles? What is the symbol for congruence?
How many congruent corresponding parts are there? What is the symbol for correspondence?
How do you put identical markings on congruent corresponding parts. Illustrate.
Where can you see/find congruent triangles?

13. EXERCISES
LET’S DO IT!

14. 1. △ABD ≅ △ CBD. Write down the six pairs of congruent corresponding parts.

15. 2. Draw △MAX ≅ △ KFC where, MA ≅ KF AX ≅ FC MX ≅ KC ∠ M ≅ ∠ K ∠ A ≅ ∠ F ∠ X ≅ ∠ C

16. 3. Which of the following shows the correct congruence statement for the figure on the right.
A. △ PQR ≅ △ KJL
B. △ PQR ≅ △ LJK
C. △ PQR ≅ △ LKJ
D. △ PQR ≅ △ JLK

17. When are two triangles congruent?

18. EVALUATION
YOU GOT THIS!
Illustrate the triangle congruence by listing down and putting identical markings on the congruent corresponding parts.

19. 1. Write the six congruent corresponding parts
1. Write the six congruent corresponding parts. Refer to the figure on the right.

20. 2. Draw the figure and mark the identical congruent corresponding parts of △ RUB ≅ △ TUG

21. ASSIGNMENT
TAKE NOTE!

22. Draw two congruent triangles and identify their congruent corresponding parts.

23. “The best angle from which to approach any problem is the TRY-ANGLE.”

24. THANK YOU!