Just a regular pentagon has 5 sides. and also has 5 lines of symmetry.
So if a shape has 7 sides it will have 7 lines of symmetry.
Its always going to be the same number.
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Answer:
840
Step-by-step explanation:
Do you have a picture?? Maybe? I’m not good at these
You want to solve for x so add 18 from both sides of the equal sign. making it 3x=12. then divide both sides by 3 making x=4. x is 4.