# Question: How do you know if a curve is closed?

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Lesson Summary A design is a closed curve when you begin and end a drawing at the same point, without lifting your pencil, and you cannot get into or out of the shape. A simple closed curve is when the lines of that curve do not cross themselves.

## What is a closed simple curve?

: a closed plane curve (such as a circle or an ellipse) that does not intersect itself. — called also Jordan curve.

## Is a circle a closed shape?

Closed Shapes in Geometry A circle is a closed shape with no sides, no vertices, and one face.

## Is every simple curve is closed?

In simple closed curves the shapes are closed by line-segments or by a curved line. Triangle, quadrilateral, circle, etc., are examples of closed curves. A closed curve which does not cross itself is called a simple closed curve. The curve which crosses itself is not a simple closed curve.

## What does a closed curve look like?

A curve that joins up so there are no end points. Example: an ellipse is a closed curve. So is a circle. You get a closed curve when you draw it without lifting your pencil and you end up where you started.

## Is it a closed shape with 6 sides answer?

A hexagon is a closed shape with 6 sides and 6 vertices.

## Is open or closed circle?

When graphing a linear inequality on a number line, use an open circle for less than or greater than, and a closed circle for less than or equal to or greater than or equal to.

## How many types of curve are there?

Question 3: What are the types of curves? Answer: The different types of curves are Simple curve, Closed curve, Simple closed curve, Algebraic and Transcendental Curve.

## Are shapes which are strong and do not change?

Ans. A triangular shape is strong and does not change easily when pressed. Triangular shapes are used in bridges, towers, etc. to make them stronger.