A:### Quick Answer

**Some commonly-known shapes are squares, circles, triangles, stars and rectangles.** There are many different kinds of polygons used in geometry and many shapes that combine or arrange multiple polygons to be used in designs.

Polygon is a geometric term that refers to a closed shape made of straight line segments. Some prominent polygons in ascending order of sides are the triangle, quadrilateral, pentagon, hexagon and octagon. Most polygons used in geometry are subdivided by more characteristics than just number of sides. For example, four-sided shapes (quadrilaterals) can be further divided into rectangles, squares, parallelograms, kites and trapezoids.

Shapes made out of curves are not considered polygons, although they are used in geometry. Circles are the best-known curved shapes, and pieces of circles are called sectors and segments. Ellipses are elongated circles.

In math, several shapes are not closed and are named after the kind of function that produces them. Open curves are often called parabolas of hyperbolas. An osculating curve resembling a wave might be described as a sine curve.

In daily life, many shapes are named after an object they resemble, such as a cross or star. Letters are also shapes and used to describe shapes, as in "v-shaped." Some shapes are associated with products and brands, such as the McDonald's arches or a Nike swoosh.

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## What are four types of quadrilaterals?

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Full Answer >**The basic four types of quadrilaterals are squares, rectangles, parallelograms and trapezoids.**A quadrilateral is any shape that has four sides and four vertices. The interior angles of a quadrilateral add up to 360 degrees.Filed Under: - Q:
## What are some examples of quadrilaterals?

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Full Answer >**There are many different types of quadrilaterals: squares, rectangles, rhombuses, trapezoids, parallelograms and kites.**A quadrilateral defined as a closed shape (polygon) that consists of exactly four straight lines.Filed Under: - Q:
## If I am given the diagonals of a rhombus, how do I find the perimeter?

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Full Answer >**Find the perimeter of a rhombus by taking half of each diagonal, summing their squares, square-rooting the result and finally multiplying by four.**This method is derived from using the Pythagorean Theorem on one of the right triangles created by the diagonals in order to determine the length of one side. Since the sides of a rhombus are equal in length, multiplying that side by four equals the rhombus' perimeter.Filed Under: - Q:
## How is the hypotenuse of a right triangle calculated?

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Full Answer >**The hypotenuse of a right triangle is calculated by finding the square root of the sum of the squares of the triangle's legs.**It can be expressed using the formula c = √(a^{2}+ b^{2}), where a and b represent the legs of the triangle and c indicates the hypotenuse.Filed Under: