

The Triangle Inequality Theorem
Presentation
•
Mathematics
•
9th Grade
•
Hard
Joseph Anderson
FREE Resource
5 Slides • 4 Questions
1
THE TRIANGLE INEQUALITY
AND INEQUALITIES IN TWO
TRIANGLES
2
Learning Targets:
◦By the end of this lesson the student will be able to …
• Understand the triangle inequality theorem and the hinge
theorem.
• prove and apply the triangle inequality theorem and the hinge
theorem.
3
Learning Targets:
•By the end of this lesson the student will be able to …
•Understand the triangle inequality theorem and
the hinge theorem.
•prove and apply the triangle inequality
theorem and the hinge theorem.
4
Multiple Choice
Is it possible to form a triangle with the given side lengths?
2mm, 5mm, 6mm
YES
NO
5
Multiple Choice
Is it possible to form a triangle with the given side lengths?
3 yd, 4yd, 8yd
YES
NO
6
Learning Targets:
•By the end of this lesson the student will be able to …
•Understand the triangle inequality theorem and
the hinge theorem.
•prove and apply the triangle inequality
theorem and the hinge theorem.
7
Multiple Choice
ACTIVITY 3
NL < GL
NL > GL
8
Independent Practice
Blue Group: Pg 43-44: Question 8, 12
Pg 49 Question: 1, 2
Green Group: Pg 43-44: Question 7, 8, 11
Orange Group: Pg 43-44: Question 5, 6, 10
Red Group: Pg 43-44: Question 1, 2, 9
9
Open Ended
EXIT TICKET
THE TRIANGLE INEQUALITY
AND INEQUALITIES IN TWO
TRIANGLES
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