Let's solve this step by step. The task is to determine whether each pair of shapes is
congruent,
similar, or
none of the two.
Definitions:
-
Congruent: Two figures are congruent if they have the
same shape and size (they can be rotated, reflected, or translated, but not resized).
-
Similar: Two figures are similar if they have the
same shape but different sizes (one is a scaled version of the other).
-
None of the two: If they differ in both shape and size, or one is not a scaled version of the other.
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Now let’s analyze each pair:
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1.
Two blue squares — one is a regular square, the other has wavy edges.
→ They are
not the same shape.
✔ Answer: None of the two
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2.
Two right triangles — one is larger than the other. But they appear to have the same angles and proportional sides.
→ Same shape, different size →
similar
✔ Answer: Similar
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3.
Two hexagons — one is smaller than the other, but both look like regular hexagons (6 equal sides).
→ Same shape, different size →
similar
✔ Answer: Similar
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4.
Two rectangles with wavy tops — both are identical in shape and size.
→ Same shape and size →
congruent
✔ Answer: Congruent
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5.
Two semicircles — both are half-circles, same size and shape.
→ Same shape and size →
congruent
✔ Answer: Congruent
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6.
Two L-shaped figures — one is larger than the other, but the shape is the same (scaled).
→ Same shape, different size →
similar
✔ Answer: Similar
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7.
Two sun emojis — same shape, same size, just different facial expressions (but the overall figure is the same).
→ Same shape and size →
congruent
✔ Answer: Congruent
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8.
Two dog emojis — same shape, same size, just facing different directions.
→ Same shape and size →
congruent
✔ Answer: Congruent
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9.
Two star emojis — one yellow, one purple. But they have the same number of points and shape.
→ Same shape, same size →
congruent
✔ Answer: Congruent
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10.
A flower and a tree — completely different shapes.
→ Not the same shape, not scaled versions.
✔ Answer: None of the two
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Final Answers:
1. None of the two
2. Similar
3. Similar
4. Congruent
5. Congruent
6. Similar
7. Congruent
8. Congruent
9. Congruent
10. None of the two
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Let me know if you'd like this formatted as a printable answer key!
Parent Tip: Review the logic above to help your child master the concept of congruent and similar figures worksheet.