Study Of Figures

Front 1

I am a polygon with four sides and angles. The sum of my angles total 360 degrees.

What am I?

Back 1

I am a quadrilateral.

Front 2

I am a series of points which passes through no point more than once. I start and stop at the same point. I may or may not contain portions that are straight.

What am I?

Back 2

I am a simple closed curve.

Front 3

I am a polygon with nine sides and angles. The sum of my angles total 1,260 degrees.

What am I?

Back 3

I am a nonagon.

Front 4

I am a simple closed curve. Both of my ends have the same shape.

What am I?

Back 4

I am an ellipsoid. I am sometimes called an ellipse.

Front 5

I am a polygon with seven sides and angles. The sum of my angles total 900 degrees.

What am I?

Back 5

I am a heptagon.

Front 6

I am a polygon with three sides and angles. The sum of my angles total 180 degrees.

What am I?

Back 6

I am a triangle.

Front 7

I am a simple closed curve. I am shaped like an egg.

What am I?

Back 7

I am an ovoid. I am sometimes called an oval.

Front 8

I am a polygon with five sides and angles. The sum of my angles total 540 degrees.

What am I?

Back 8

I am a pentagon.

Front 9

I am a polygon with eight sides and angles. The sum of my angles total 1,080 degrees.

What am I?

Back 9

I am an octagon.

Front 10

I am a simple closed curve made of three or more line straight segments.

What am I?

Back 10

I am a polygon.

Front 11

I am a simple closed curve. Every point on my circumference is equally distant from the center.

What am I?

Back 11

I am a circle.

Front 12

I am a polygon with six sides and angles. The sum of my angles total 720 degrees.

What am I?

Back 12

I am a hexagon.

Front 13

I am a polygon with ten sides and angles. The sum of my angles total 1,440 degrees.

What am I?

Back 13

I am a decagon.