2) Different Kinds of Angles

DETAILED LESSON PLAN IN MATHEMATICS 7
Different Kinds of Angles
I. OBJECTIVES:
Within or at the end of the lesson, the students should be able to:
a. identify the different kinds of angle;
b. illustrate the different kinds of angle; and
c. appreciate the importance of the different kinds of angles in real-life
situations.
II. SUBJECT MATTER:

Topic: Different Kinds of Angles
Reference: www.google.com,www.youtube .com
Instructional Materials: Laptop, blackboard, chalk, television
III. PROCEDURE:
TEACHER’S ACTIVITY STUDENT’S ACTIVITY
Daily Routine
 Prayer
Class let us all stand and feel the
presence of the Lord.
Student 1, please lead the prayer. In the name of the Father and of the Son
and of the Holy Spirit, lord we thank you
for the give of life today. Thank you for
the love and protection. Bless us father
with your wisdom as we begin our class.
In Jesus name we pray. Amen.
 Greetings
Good morning class. Good morning, ma’am!
 Classroom set-up
Before you take your seat, please pick
those scattered pieces of plastic and
paper under your chair and arrange
your chairs properly. (the students will pick those scattered
pieces of plastic and paper under their
chair and arrange their chairs properly)
Secretary, who is absent today? None ma’am.

That is good to hear!
Before we start, I want you to know my

rules during discussion.
1. Be prepared for class.
2. Respect and listen to the teacher.
3. Raise your hand to recite.
Is it clear class? Yes ma’am.
A. ACTIVATION
ACTIVITY 1: MARY SAYS!

Directions:
 The teacher will be designated as Mary
and tell the students what they must do.
 The students must obey the command
of the teacher if she will say words
“Mary Says. Example: “Mary says
touch your nose”, the students also
touch their nose.
 Mary Says: “Form your arms in V
position, L position, and Straight
position”.
 Mary Says: “Raise your left arm in a (the students perform the activity using
diagonal line and raise your right arm their body parts)
on a shoulder level in a straight line."
B. ANALYSIS
How did you find your activity class? Interesting ma’am.
Based from your activity, what do you The figures being formed are all angles,
call the figures being formed? ma’am.
Okay, very good class.
Take a look at this picture.
Class, are you familiar with this

measuring tool? Yes, ma’am.
What is the name of this measuring

tool? A Protractor, ma’am.
What is the use of a protractor? A protractor is used to find the measure

of an angle.
Okay very good class, your answers all
correct!
So, a protractor is used to find the

measure of an angle, we place the
center of a protractor over the vertex of
an angle. Then align the mark labeled 0
with one side of an angle and read the
scale where the other side of the angle
falls.
The unit of measurement used in an

angle is called degree, denoted by a
symbol º.
C. ABSTRACTION
Your activity class has something to do

with our discussion for today which is
all about classifying different kinds of
angles.
DIFFERENT KINDS OF
ANGLES
Class, kindly read.
Different kinds of angles.
Okay, very good class
Let’s define what is an angle?
ANGLE – an angle is formed by two non-

collinear rays that have a common
endpoint. The endpoint is the vertex of the
angle and each ray is the side of the angle.
SIDE
VERTEX SIDE
The symbol for angle is ∠.
Naming and Identifying Parts of an

angle
An angle is name using a number, the
vertex of the angle or the vertex with a
point on each side of the angle
Possible names of the angle:
∠1 ∠CAB ∠BAC
Vertex: B
Sides: BA and BC
Note: We always write the vertex in the
middle of the three letters.
Other examples of an angle:
What is the name of the angle in letter

a?
Yes, Alnessa.
Very good, Alnessa.

How about for letter b, what is the ∠MAP or ∠PAM or ∠A, ma’am.
name of the angle?
Yes, Marian.
Very good, Marian.

∠X, ma’am.
How about for letter c, what is the
name of the angle?
Yes, Shaina.
Very good, Shaina.

∠1, ma’am.
Different Kinds of Angles:
Acute Angle – is an angle whose

measure is greater than 0° but less than
90°.
Based from the definition of an acute

angle, can you give a degree measure
that represents an acute angle?
Right angle – is an angle whose

measure is 90°. 1°, 2°,3°,,,89°.
Based from the definition of right

angle, can you give an example of it
that can be seen inside your classroom?
Obtuse Angle – is an angle whose

measure is greater than 90° but less The edge of the blackboard ma’am.
than 180°.
Based from the definition of obtuse

angle, can you give a degree measure
that represents an obtuse angle?
Straight angle – is an angle whose

measure is 180°. 91°,92°,93°,,,179°.
Based from the definition of straight

angle, can you give an example of it
that can be seen inside your classroom?
Reflex angle - is an angle whose

measure is more than 180° and less The width of the blackboard ma’am.
than 360°.
Based from the definition of reflex
angle, these are some examples of a
reflex angle.
Again class, what are the different

kinds of angles?
Acute angle, right angle, obtuse angle,

straight angle and reflex angle, ma’am.
D. APPLICATION
ACTIVITY 2: WORK IN PAIR!
Direction: Given the figure below, identify

what kind of angle (acute, obtuse, or right) is
being indicated. Write your answer on a ¼
sheet of paper.
1. ∠PQR
2. ∠PQT
3. ∠RQS
4. ∠RQT
5. ∠UQS
6. ∠UQR
7. ∠UQP
8. ∠SQT
IV. EVALUATION
Directions: Answer the following questions. Write your answer on a 1/ 4 sheet of paper.
A. Identify what kind of angle the figures represent.
B. Identify what kind of angle the degree measures represent.

6. 185°
7. 67°
8. 22°
9. 90°
10. 100°
V. ASSIGNMENT:
For your assignment, bring a protractor and have a review on the relationships of
geometric figures using measurement and by inductive reasoning on the
internet(www.youtube.com).
Prepared by:
AIRA T. GARCIA
Pre-service Teacher
Checked by:
MARIE P. ZINGAPAN
Cooperating Teacher

2) Different Kinds of Angles

Uploaded by

Copyright:

Available Formats

2) Different Kinds of Angles

Uploaded by

Document Information

Original Title

Copyright

Available Formats

Share this document

Share or Embed Document

Sharing Options

Did you find this document useful?

Is this content inappropriate?

Copyright:

Available Formats

2) Different Kinds of Angles

Uploaded by

Copyright:

Available Formats

DETAILED LESSON PLAN IN MATHEMATICS 7

Different Kinds of Angles

II. SUBJECT MATTER:

Secretary, who is absent today? None ma’am.

Before we start, I want you to know my

ACTIVITY 1: MARY SAYS!

How did you find your activity class? Interesting ma’am.

Okay, very good class.

Take a look at this picture.

Class, are you familiar with this

What is the name of this measuring

What is the use of a protractor? A protractor is used to find the measure

So, a protractor is used to find the

The unit of measurement used in an

Your activity class has something to do

Let’s define what is an angle?

ANGLE – an angle is formed by two non-

Naming and Identifying Parts of an

Other examples of an angle:

What is the name of the angle in letter

Very good, Alnessa.

Very good, Marian.

Very good, Shaina.

Acute Angle – is an angle whose

Based from the definition of an acute

Right angle – is an angle whose

Based from the definition of right

Obtuse Angle – is an angle whose

Based from the definition of obtuse

Straight angle – is an angle whose

Based from the definition of straight

Reflex angle - is an angle whose

Again class, what are the different

Acute angle, right angle, obtuse angle,

ACTIVITY 2: WORK IN PAIR!

Direction: Given the figure below, identify

B. Identify what kind of angle the degree measures represent.

You might also like