Proportion
Proportion
Proportion
I. OBJECTIVES
A. Content Demonstrates understanding of key concepts of Pythagorean Theorem
Standards and Right Triangles Similarity.
The learner shall be able to investigate, analyze, and solve problems
B. Performance
involving Pythagorean Theorem and Right Triangles Similarity through
Standards
appropriate and accurate representation.
When can you say that the Sir, we can say that it is right triangle
triangle is right triangle? if it has 90° angle.
C. Presenting
examples/
instances of the
new lesson
Prove: h=l√ 2
2l2=h2
√ 2l 2=+√ h2
l√ 2=+ h
h= l√ 2
5 h=5√ 2
Try this.
h= l√ 2
h=8√ 2
8
S2+l2=h2
S2+l2=(2s)2
l2=(2s)2-s2
l2=4s2-s2
l2=3s2
√ l2=√ 3s2
l=s√ 3
Try this.
h=2s
12=2s
y 2 2
6=s
l=6√ 3
h=2s
s 26=2s
26=2s
2 2
l 13=s
l=s√ 3
l=13√ 3
h=x√ 2
4√ 2=x√ 2
4√ 2=x√ 2
F. Developing √2
mastery
4=x
7.5=s
Therefore, l= 7.5√ 3.
H. Making
generalization
and abstractions
about the lesson What did you learn from this Students may answer vary.
lesson? What part of lesson
confusing?
Solve the following.
1.
15
2.
12
I. Evaluating
3.
learning
4.
J. Additional activities
for application or Answer PRACTICE, pages 230-
remediation 231. On short bond paper. Submit
it on march 4.
V. REMARKS
VI.REFLECTION
A. No. of learners
who earned 80%
on the formative
assessment
B. No. of learners who
require additional
activities for
remediation