Tell if each shape is a polygon or is not a polygon. Explain how you know. What makes that shape a polygon or not a polygon?

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The first shape is a polygon while the second one is not.

1.A polygon is a flat, two-dimensional (2D) sides is fully closed. while, a non polygon shape is a shape that is not closed or doesn't have straight lines.

2. The thing that makes it a polygon or not is the opening/closing or the straight or non straight lines.

Step-by-step explanation:

what's that

x=17

step-by-step explanation:

solve 3x-24=x+10

then that makes it 2x=34 because you subtract an x from both sides to get rid of the one on the right, and then you add 24 to both sides to get rid of the 24 on the left

divide by both sides by 2 to get your answer so that you can get your answer