please tell answernof this exercise
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1. 1,4,5,6,9
2. a and d , a is having a curved surface and b is not a closed figure
3. sides. name.
a . 3. triangle
b. 8. octagon
c. 6. hexagon
d. 7. septagon
e. 4. quadrilateral
f , g - 5. Pentagon
h. 7. septagon
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