MATHEMATICS 8
Illustrating Triangle
Congruence
(M8GE-IIID-1)
Mark Anthony A. Mapula
Teacher II
8th
GRADE
OBJECTIVES:
Here’s what you will learn for today:
● Discuss the idea of congruence.
● Illustrate triangle congruence.
LET’S PLAY A GAME!
BRING ME THE FOLLOWING OBJECTS:
●
PAIR OF EARRINGS
●
PAIR OF SHOES
●
EYE GLASSES
●
PAIR OF NOTEBOOKS
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.
TO WHOM SHOULD I PAIR
Name your triangles.
TO WHOM SHOULD I PAIR
What kind of triangles are
they?
TO WHOM SHOULD I PAIR
Which parts of one triangle
corresponds to the other?
TO WHOM SHOULD I PAIR
What is the symbol for
correspondence?
TO WHOM SHOULD I PAIR
Why did you say that they are
congruent?
TO WHOM SHOULD I PAIR
What is the symbol for
congruence?
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?
LET’S DO IT!
1. △ABD ≅ △ CBD. Write
down the six pairs of
congruent
corresponding parts.
2. Draw △MAX ≅ △ KFC where,
MA ≅ KF
AX ≅ FC
MX ≅ KC
∠ M≅∠K
∠ A≅∠ F
∠ X≅∠ C
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
When are two
triangles
congruent?
YOU GOT THIS!
Illustrate the triangle congruence by listing
down and putting identical markings on the
congruent corresponding parts.
1. Write the six
congruent
corresponding parts.
Refer to the figure on
the right.
2. Draw
the figure and
mark the identical
congruent
corresponding parts of
△ RUB ≅ △ TUG
TAKE NOTE!
Draw two congruent
triangles and identify
their congruent
corresponding parts.
“The best angle from which
to approach any problem is
the TRY-ANGLE.”
THANK YOU!