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Grade 3 - Mathematics
8.9 Congruent and Symmetric Figures
When two figures are exactly the same, they are said to be congruent.
When a figure can be folded into equal pieces, then it is said to be symmetric.
The line along which the figure is folded is called the line of symmetry.
Example
: How many lines of symmetry does this figure have?
Answer: 4
Directions:
Answer the following. Also draw at least five symmetric figures and show their line of symmetry.
Q 1
: In a symmetrical figure the folded line is called
radius
diameter
the line of symmetry
Q 2
: How many lines of symmetry does a square have?
2
4
1
3
Q 3
: These two figers are congruent.
False
True
Q 4
: Are the two triangles in the figure congruent?
True
False
Q 5
: Two figures that are exactly the same shape and size are said to be
different
congruent
similar
Q 6
: Are the two triangles in the figure congruent? (hint: sometimes you have to turn the figure around to see if it is congruent with another)
no
yes
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Question 8: This question is available to subscribers only!
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