zero
A dart board because they look like concentric circles and concentric circles look like circles with a center words like swirly could describe...
A triangle cannot have two parallel sides. In order for a figure to be a triangle, it must be a closed figure with three sides and three angles. If two of the sides were parallel, there is no way the figure could be closed by only one other line.
It could be a circle or a sphere
A rectangle.
It could be a square or a rectangle
The circles could be in 2 planes that are parallel to each other. Lines and planes can be parallel. Lines of latitude are examples of circles that are in parallel planes.
To create three different drawings showing a number of circles and triangles in which the ratio is 2:3 you can: Start with an equilateral triangle, draw a circle inside it, draw an equilateral triangle inside the circle, draw a circle in the triangle and then draw an equilateral tiangle in the smallest circle. Or, you could draw 3 triangles and 2 circles in a line. Or, you could draw 3 triangles on a line with 2 circles between them.
Triangles, Circles, Ellipses Only triangle if you only want polygons.
A dart board because they look like concentric circles and concentric circles look like circles with a center words like swirly could describe...
A triangle cannot have two parallel sides. In order for a figure to be a triangle, it must be a closed figure with three sides and three angles. If two of the sides were parallel, there is no way the figure could be closed by only one other line.
A circle could be, and I think that an ellipse also could be.
A triangle couldn't.
You can remove dark circles by getting enough sleep at night or you could also try any kind of foundations to cover the dark circles underneath your eyes.
An ellipse is the locus of a point such that the sum of its distance from two fixed points is the same. The shape is like a stretched circle but its circumference does not become a straight line.An oval is an imprecise term for all kinds of "stretched" circles. The word is derived from ova = egg so an oval could have the shape of the cross section of an egg; it could be an ellipse or it could be like a running track, which consists of two semi-circles with parallel straight sections.
A circle.
It could be a circle or a sphere
Parallelograms have parallel diagonals (these include squares, rectangles, rhombi, an trapezoids). Parallel lines are lines with the same slope that could carry on infinitely without intersecting. A parallelogram can have 1 or 2 sets of parallel lines.