School

1. Triangle
Inequality
Theorem
Here starts the
lesson!

2. PRAYER

3. ATTENDANC
E

4. Respective
Groups
PINK, GREEN, RED, ORANGE

5. MATHRAMBUL
AN

6. 1. The players will group into 4, based
on the color on their name tags:
orange, pink, green, and red.
2. Mathrambulan is rumbled word and
each player will try to find out what
that word is.
3. After guessing the word, the
players get the answer in front and
put it to his/her forehead.
4. The group who will first answer the
Mathrambulan can earn points.
5. 1 representative per group
Mechanics
of the Game

7. Pray-Queen-sea-tea-ball
“Frequency table”
Quo-wide-ray-lee-tea-reel
“Quadrilateral”
Example

8. May-shore-meant
MATHrambulan
#1
Measurement

9. Pooh-lay-gone
MATHrambulan
#2
POLYGON

10. Tea-you-ray-I'm
MATHrambulan
#3
Theorem

11. Try-young-gel-and-I-quo-lay-tea
MATHrambulan
#4
Triangle Inequality

12. Die-Mansions
MATHrambulan
#5
Dimensions

13. The sum of two sides
must be greater than the
third side.
Triangle Inequality
Theorem

14. 𝒃 + 𝒄 > 𝒂
Formula
𝒄 + 𝒂 > 𝒃
𝒂 + 𝒃 > 𝒄

15. Tell whether it is possible to form
a triangle with the lengths 7
inches, 8 inches, and 14 inches.
Example

16. ACTIVITY
TIME!
Forming Triangles

17. You can replace this
picture if you wish
● You are task to do a triangle so I will give
you materials that you need and follow the
steps in doing it. You must read and
measure it carefully so that you can form it
very well.
● After doing it and putting some marks in the
table you are task to answer the following
guide questions.
● You will be given 15 mins to do the task and
you have 2-3 mins to present your work( if
you are not done there will be chance of
time you will present what you have already
finish)
● And lastly, you will pick 1 to 2
representative to present in front of the
class.
For the Instructions:

18. Materials: Marker, Drinking straw, Ruler, Pair of
Scissors
Steps:
Step 1: Prepare five pieces of drinking straws.
Step 2: Using a ruler and a marker, measure and mark
the drinking straws following these
dimensions:
-drinking straw 1: 1 inch
-drinking straw 2: 3 inches
-drinking straw 1: 4 inches
-drinking straw 2: 5 inches
-drinking straw 1: 8 inches
Step 3: Cut the drinking straws strictly following the
indicated measurements on step 2.
Step 4: Try forming triangles following the specified
dimensions found on the table below. If the given
dimensions were able to form a triangle, put a check
mark on the Yes
column, but if the given dimensions were not able to
form a triangle, put a check mark on the No column.
FORMING
A
TRIANGL
E

20. PRESENTATI
ON TIME

22. ● Triangle Inequality
The length of a side of a
triangle is less than the sum of
the lengths of the other two
sides. The length of one side is
also greater than the positive
difference of the lengths of the
other two sides.
Triangle
Inequality
Theorem

23. 𝒂 + 𝒃 > 𝒄
𝒃 + 𝒄 > 𝒂
𝒄 + 𝒂 > 𝒃

24. 1. Tell whether it is possible to form a triangle
with the lengths 8 inches, 15, inches, and 6
inches.
2. Tell whether it is possible to form a triangle
with the lengths 3 cm, 7 cm, and 12 cm.
3. Check whether it is possible to form a
triangle with the lengths 12 cm, 15 cm, and 23
cm.
4. Check whether it is possible to form a
triangle with the lengths 6 cm, 8 cm, and 7
cm.
5. Tell whether it is possible to form a triangle
with the lengths 2 cm, 3 cm, and 5 cm.
Seatwork
Answer the following questions
with COMPLETE
SOLUTION.(using the formula
given)
𝒂 + 𝒃 > 𝒄
𝒃 + 𝒄 > 𝒂
𝒄 + 𝒂 > 𝒃

25. 1. Tell whether it is possible to form
a triangle with the lengths 9
inches, 14 inches, and 5 inches.
2. Tell whether it is possible to form a
triangle with the lengths 5 cm, 9 cm,
and 12 cm.
3. Check whether it is possible to
form a triangle with the lengths 15
cm, 14 cm, and 25 cm.
Assignme
nt