Republic of the Philippines
Department of Education
Region VII, Central Visayas
Division of Lapu-Lapu City
STA. ROSA NATIONAL HIGH SCHOOL
INSTRUCTIONAL PLAN
Teacher
Date
Grade Level/
Section
Topic
Learning
Objectives
Resources
Needed
HYACINTH MAY M. PEÑALOSA
Subject
Quarter
MATHEMATICS 9
3
Grade 9-HMP, JMC, LIA, NTC
Time
12:15-5:45 PM
Determines the Conditions that Make a Quadrilateral a Parallelogram
Knowledge Define parallelogram.
Skills
Illustrate the conditions that make a Quadrilateral a Parallelogram.
Attitudes
Demonstrate interest and cooperation in classroom activities.
Values
Shows appreciation on the activities.
Instructional Materials: Learner’s Module
* Checking of Attendance
* Review of previous lessons
Preparations
Group Activity.
Identify Me.
With the students in group, the teacher will present several quadrilaterals and let the
students identify the kind of quadrilateral it is.
Which of the following is a parallelogram?
Activity
Presentation
Analysis
Abstraction
Group work. Construct to know me.
Directions: Follow the procedure in constructing the parallelogram and
determine the conditions that makes a quadrilateral a parallelogram
1. Draw quadrilateral ABCD with AB≅CD and BC ≅ AD
2. Draw a diagonal BD
3. Draw another diagonal AC
4. Measure the angles of the parallelogram as shown in the figure
5. Measure the diagonals.
Questions:
1. What have you observed with the sides of the quadrilateral?
2. What about the measure of the diagonals?
3. What about the measure of the angles?
4. Observe the measures of the opposite angles, what can you conclude?
5. Observe the measures of the adjacent angles, what have you find out?
Guide questions to ponder:
 What are the things you have observed when you investigate the
quadrilateral?
 What kind of quadrilateral is it based on the different properties?
 How do you apply the properties of parallelogram in real life?
What are the conditions that a quadrilateral a parallelogram?
Six basic conditions that a quadrilateral a parallelogram
1. Both pairs of opposite sides are parallel
2. Both pairs of opposite sides are congruent
3. Both pairs of opposite angles are congruent
4. Diagonals bisect each other,
5. One angle is supplementary to both consecutive angles (same-side
interior)
6. One pair of opposite sides are congruent AND parallel.
By pair.
Direction: On a graphing of paper, draw a parallelogram CREATIVELY based
on their properties
Sample
Practice
Assessment
Application
Individual Work.
Direction: Put a check mark on the space provided before the number if the property belongs
to a parallelogram. Leave no mark on the space if it is not a property of a parallelogram.
___________1. All sides are congruent.
___________2. Two pairs of opposite sides are congruent.
___________3. Two pairs of opposite sides are parallel.
___________4. All angles are right angles.
___________5. Two pairs of opposite angles are congruent.
___________6. Diagonals are congruent.
___________7. Diagonals bisect each other.
___________8. Exactly one pair of sides is parallel.
___________9. No sides are parallel.
___________10. Consecutive angles are supplementary.
Assignment: (1 whole sheet of paper)
Direction: List down the given and its measurement in the table based on the figure that
follows.
Assignment
Given
Pairs of opposite sides
1. ___ & ___
2. ___ & ___
Pairs of consecutive angles 1. ___ & ___
2. ___ & ___
3. ___ & ___
4. ___ & ___
Reflection
Pairs of opposite angles
1. ___ & ___
2. ___ & ___
Diagonals
1. ___
2. ___
Pairs of segments formed by intersecting
diagonals
1. ___ & ___
2. ___ & ___
Parallelograms of life is so beautifulTwo opposite sides are parallel. So will never meet. Yet opposite sides are similar. And if one
angle is right angle, all angles are right too.
-Stunned entity
Remarks