4.1 - Congruent Triangles
Presentation
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Mathematics
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8th - 11th Grade
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Practice Problem
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Medium
Standards-aligned
Steve Dull
Used 20+ times
FREE Resource
7 Slides • 2 Questions
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4.1 - Congruent Triangles
By Vinícius Weite Thomé - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=49327560
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Objective:
To recognize congruent triangles and their corresponding parts.
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New Term:
Congruent Triangles:
Triangles with the same size and shape are congruent.
This means that all the corresponding parts (sides and angles) are congruent.
("Corresponding parts"? Put your fingertips together. Your corresponding fingers are touching. Thumb to thumb, ring finger to ring finger, so forth)
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Congruency statement
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CPCTC
This works in the opposite direction as well. If we know two triangles are congruent, that means that all their pairs of corresponding parts are congruent. We use the abbreviation CPCTC:
Corresponding Parts of Congruent Triangles are Congruent
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Open Ended
Given the congruency statement ΔJKL≅ΔPQR list all pairs of congruent sides and angles on your fillable notes.
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Multiple Choice
Given the congruency statement ΔWXY≅ΔEFG what is another valid congruency statement?
ΔYWX≅ΔGEF
ΔXYW≅ΔFGE
ΔWYX≅ΔEGF
All are valid congruency statements for this pair of triangles.
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Take the next 10 minutes to complete #3, 4, and 5 on your fillable notes.
4.1 - Congruent Triangles
By Vinícius Weite Thomé - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=49327560
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