exam Maths Puzzle Numerical Ability

What is the name of the polygon whose interior angles have a sum of 540 degrees?

Thanks,
Amanda

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exam Other Question

Please help me:

1. How many solutions exist for a quadratic equation? How do we detemine whether the solutions are real or complex? 5x - y=25
5x +6y= -10
Solve then graph then classify if it is consistant or inconsistant, dependant or independant.
Can someone please help me with this one??