Find Possible Lengths of Third Side in a Triangle

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Learn how to find the interval of possible lengths of the third side in a triangle given the two other sides in this free math video tutorial by Mario's Math Tutoring.

0:15 What is the Triangle Inequality Theorem
0:53 Example 1 What are the Possible Lengths of 3rd Side
2:17 Shortcut - Writing a Compound Inequality to Solve

Related Videos:

Triangle Inequality Theorem Example

Pythagorean Inequality Theorem

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WAIT... THAT'S IT?! THATS ALL I NEEDED TO DO?! WHAAAAT?!

syundown
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Thank you so much! I have a quiz today in geometry an my teacher was doing a horrible job at explaining this, but this helped a lot!!

brittneyp
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Best explanation I've seen for this theorem!

alysoungoebel
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SHORT STORY: Add both numbers for one possible length subtract both sides for another possible length

iuzennu
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Mario. You're skull is filled with this incredible amount of knowledge that is truly baffling to mortal minds.

andro
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5 years later this has proved to be extremely helpful to me, this is truly amazing work. Thank you so much!

marcosmartinez
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I’m a terrible math student and failing unmotivates me my teachers try but I never understand so thank you I would never do this ever but you have helped me so thank you don’t stop what you’re doing may god bless

yeemem
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I love it when people put things so straight forward

jakethegreat
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Thank you for taking the time to upload these videos so others can learn from these and understand them much better than my geometry teacher is teaching me.

kimflagor
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Thank you so much Mario you helped me get a 100 in my test.

_juan_
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Thank you so much this is a life changer I am so glad God created you.

tristanbarnette
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You're video helped me in my homework

amiraahmed
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Popped up in an SAT grid-in math question. Your video was perfect for the problem since every other video was using the Law of Cosines. Thanks!

Shaunss
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YOU JUST HELPED ME FINISH MY HOMEWORK I WAS STRUGGLING, thank you so much!! ❤️🥺

J.ustVal
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you helped me man, you really did, I owe you, , , :) :D

owaistoru
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currently taking a test rn can't explain my gratitude. Just subbed too!

Burner
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This really helped me sir within 3 minute u explained my 50 minutes class

godxhawkeye
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Tysm this was so helpful !!! My teacher explained it to the point it was really confusing

evilnuggets
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THANK YOU SO MUCH. you are a life saver

Natalie-sqnf
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Thank you, really saved me on Mr. Whites homework

CarlosRodriguez-ndvt