created by sooz williams ©2005 what is congruence? congruence = matching if two shapes are...
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Created by Sooz Williams ©2005Created by Sooz Williams ©2005
Created by Sooz Williams ©2005Created by Sooz Williams ©2005
What Is What Is Congruence?Congruence?
Congruence = Congruence = MatchingMatching
If two shapes are If two shapes are congruentcongruent they match they match exactly in shape exactly in shape andand in sizein size
Created by Sooz Williams ©2005Created by Sooz Williams ©2005
For For Example:Example:
These two These two triangles are triangles are congruentcongruent
They are exactly They are exactly the same the same shapeshape
They are exactly They are exactly the same the same sizesize
Created by Sooz Williams ©2005Created by Sooz Williams ©2005
Some More Some More Examples:Examples:
Congruent Congruent circles!circles!
Congruent Congruent stars!stars!
Congruent Congruent hearts!hearts!
Created by Sooz Williams ©2005Created by Sooz Williams ©2005
Sometimes shapes are Sometimes shapes are turned in a different turned in a different direction, but if they direction, but if they
have the same shape and have the same shape and the same size, they are the same size, they are
congruentcongruent..
All of these hearts are All of these hearts are congruent!congruent!
Created by Sooz Williams ©2005Created by Sooz Williams ©2005
Are these two Are these two shapes shapes
congruent?congruent?
YES! They are the SAME size YES! They are the SAME size and shape!and shape!
Created by Sooz Williams ©2005Created by Sooz Williams ©2005
Are these two Are these two shapes shapes
congruent?congruent?
YES! Even though you have to YES! Even though you have to rotate one of them, they are the rotate one of them, they are the
SAME size and shape!SAME size and shape!
Created by Sooz Williams ©2005Created by Sooz Williams ©2005
Are these shapes Are these shapes congruent?congruent?
No! They are No! They are notnot the same the same shapeshape,,
so they are so they are notnot congruentcongruent!!
Created by Sooz Williams ©2005Created by Sooz Williams ©2005
Are these shapes Are these shapes congruent?congruent?
No! They are No! They are notnot the same the same sizesize,,
so they are so they are notnot congruentcongruent!!
Created by Sooz Williams ©2005Created by Sooz Williams ©2005
Can you match Can you match the congruent the congruent
shapes?shapes?
Created by Sooz Williams ©2005Created by Sooz Williams ©2005
The others are NOT The others are NOT congruentcongruent
– – can you explain can you explain why?why?
Created by Sooz Williams ©2005Created by Sooz Williams ©2005
Let’s try some Let’s try some more! more!
Can you match the Can you match the congruent shapes?congruent shapes?
Created by Sooz Williams ©2005Created by Sooz Williams ©2005
The others are NOT The others are NOT congruentcongruent
– – can you explain can you explain why?why?
Created by Sooz Williams ©2005Created by Sooz Williams ©2005
Can you find Can you find congruencecongruence in in
the world the world around you?around you?
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