This document contains materials for a lesson on congruent triangles for Grade 8 students in the BAQUILAN RESETTLEMENT HIGH SCHOOL in Botolan, Zambales, Philippines. It includes objectives, activity cards with tasks for students, an assessment card, and reference materials. The general objective is for 90% of students to be able to describe congruent triangles by defining them, listing the six corresponding parts, and illustrating examples.

1. Department of Education
Region III
Division of Zambales
BAQUILAN RESETTLEMENT HIGH SCHOOL
Botolan
(A Strategic Intervention Material in Mathematics Grade 8)
Hilda D. Dragon
Proponent
Arturo G. Rico, Ed.D.
Head Teacher III/School Head
Noted:

2. Page Name Page No.
Objectives 1
Guide Card 2
Activity Card 3-5
Assessment Card 6
Enrichment Card 7
Reference Card 8
Enumerate at least 3 con-
gruent triangles that you can see
in our campus.
Now you’re ready...let’s go outside.
Good job!!!

3. For further reading...
You may also refer to the following materials:
1. Learner’s Module in Math Grade 8
2. Geometry by Bernabe, pp. 88-91
3. www.shelovesmath.com
4. www.worsleyschool.com
Enjoy reading!!!
General Objective
At the end of the lesson, 90 % of the Grade 9
students are expected to describe congruent
triangles.
Sub-Tasks
1. Define congruent triangles.
2. List the six corresponding parts of congruent
triangles.
3. Illustrate congruent triangles

4. What is meant by congruent triangles?
Two triangles are congruent if and only if
their vertices can be paired so that corresponding
parts are congruent and corresponding angles are
congruent.
They must have the same shape and the same size.
The sides and angles will then match up like this:
Corre- sponding An- gles
Corresponding Sides
Enumerate at least 3 con-
gruent triangles that you can see
in our campus.
Now you’re ready...let’s go outside.
Good job!!!

5. Smile !!!
Task 1: Define congruent triangles.
Task 2 : List the six corresponding parts
given that BOY LET .
Task 3: Illustrate your own
congruent triangles.
Let’s see how much you’ve
learned...
Let’s try !
Given: JOY HOT
Task:
List the six corresponding parts .
Good luck !!!

6. I bet you can do this …
One
More
Given: ABC EDC
AB // DE
Task: 1. Put some markings to indicate corresponding sides
and angles.
2. List the six corresponding parts.
You’re good!!!
Now, it’s time to illustrate your own congruent triangles.
What is meant by congruent triangles?
Two triangles are _________ if and only if
their ________ can be paired so that corresponding
________ are congruent and corresponding________
are also congruent.
Two triangles are_________ if they have the
same _________and the same _________.
I believe you can do it!!!
More practice...