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Answer 1

7. equal

8. 3x+8=7x-5

7x-3x=8+5

4x = 13

x = 13/4

9. Equilateral triangle

lines of symmetry = 3

order of rotation = 3

Square

lines of symmetry = 4

order of rotation = 4

10. (i) x = 80°

y = 110°

(OR)

(ii)<A + <B + <C = 180°

x+22+2x-4+30 = 180

3x+48 = 180

3x = 180-48

3x = 132

x = 132/3

x = 44

<A = x+22 = 44+22 = 66°

<B = 2x-4 = 2(44)-6 = 88-6 = 82°

Answer 2

Step-by-step explanation:

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