Similarity and Congruence Visual Identification Irma Crespo 2010
Similarity and Congruence Visual Identification Irma Crespo 2010.
Dec 17, 2015
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Similarity and Congruence
Visual Identification
Irma Crespo 2010
Designs
Congruent Shapes
Same shape
Same size
More Congruent Shapes
Same shape
Same size
Similar Shapes
Same shape
Different size
More Similar Shapes
Same shape
Different size
Which is false?
A) Congruent shapes are identical.
B) Angles in similar shapes are always the same.
C) Similar shapes are always the same size.
D) Angles in congruent shapes are always the same.
Similar shapes are resized versions of the original shape.Congruent shapes are exactly the same shape and size.
So, all pairs of (congruent, similar) shapes
are (congruent, similar).
SquaresWhich of the following is true?
A) All squares are congruent.
B) All squares are similar.
C) Some pairs of squares are neither congruent nor similar.
TrianglesWhich of the following is true?
A) All triangles are congruent.
B) All triangles are similar.
C) Some pairs of triangles are neither congruent nor similar.
CirclesWhich of the following is true?
A) All circles are congruent.
B) All circles are similar.
C) Some pairs of circles are neither congruent nor similar.
Similar or CongruentYour Game
Similar or Congruent
Similar or Congruent
Similar or Congruent
Similar or Congruent
Similar or Congruent
Similar or Congruent
Similar or Congruent
Similar or Congruent
Similar or Congruent
Similar or Congruent
Similar or Congruent
Similar or Congruent
Similar or Congruent
Similar or Congruent
Similar or Congruent
Similar or Congruent
Similar or Congruent
Summary
Congruent shapes are identical. They have exactly the same shape and size.
Similar shapes have the same shape and can have different sizes.
Congruent shapes are similar.
Similar shapes are not congruent.
Practice Worksheet
Answer the 8 multiple choice questions.
For the 9th question, think about ways to mathematically determine if shapes are similar or congruent for the next lesson.
Main Resources
http://www.absorblearning.com/mathematics/demo/units
PowerPoint created by Irma Crespo. University of Michigan-Dearborn, School of
Education. Winter 2010.
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