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Horizontal lines are parallel to the horizon or parallel to level ground. They have a slope of zero and are parallel to the x-axis on a graph. Vertical lines are perpendicular to the horizon, parallel to the y-axis on a graph and have undefined slope.

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  • Who drew the perfect circle?

    Q: Who drew the perfect circle?

    A: The artist Giotto di Bondone is known for drawing the perfect circle. Although it may only be a legend, the story goes that the Pope sent a messenger to Giotto requesting that he prove his drawing ability. In one stroke, Giotto drew a perfect red circle.
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  • Is a circle a polygon?

    Q: Is a circle a polygon?

    A: A circle is not a polygon because it does not conform to the definition of a polygon. The definition of a polygon is a closed figure formed by straight lines or straight sides. Although the circle is a closed figure, it is not formed by straight line segments.
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  • How many sides are there in a parallelogram?

    Q: How many sides are there in a parallelogram?

    A: A parallelogram is a two-dimensional rhomboid or quadrilateral with four sides. The four sides, or edges, consist of two pairs, each with the opposite side parallel and congruent. The two pairs of consecutive angles, or vertices, in a parallelogram are supplementary, which means that the sum of the angles in each consecutive pair is 180 degrees.
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  • What is the formula for radius?

    Q: What is the formula for radius?

    A: The formula for a radius is the diameter of a circle divided by two. The radius of a circle is defined as the distance from the middle of a circle to any point on the edge of the circle.
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  • How many right angles does a square have?

    Q: How many right angles does a square have?

    A: A square has four right angles and four equal sides. It belongs to the set of polygons known as quadrilaterals, which are shapes with four sides.
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  • What is the formula for the area of a semicircle?

    Q: What is the formula for the area of a semicircle?

    A: The area of a semicircle is (?*R*R)/2. This means the radius of the semicircle is squared, multiplied by the constant pi, then divided by 2.
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  • What are some real-life examples of parabolas?

    Q: What are some real-life examples of parabolas?

    A: When a pitcher throws a baseball, it follows a parabolic path, providing a real life example of the graph of a quadratic equation. The parabolic function predicts if the ball arrives in the batting range for the particular hitter and the time between it leaving the pitcher's hand and crossing the plate. There are many real life examples of such shapes ranging from video games to engineering.
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  • What is the difference between vertical and horizontal lines?

    Q: What is the difference between vertical and horizontal lines?

    A: Horizontal lines are parallel to the horizon or parallel to level ground. They have a slope of zero and are parallel to the x-axis on a graph. Vertical lines are perpendicular to the horizon, parallel to the y-axis on a graph and have undefined slope.
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  • What is the way to calculate the area of an irregular shape?

    Q: What is the way to calculate the area of an irregular shape?

    A: To calculate the area of an irregular shape, the shape needs to be divided into regular shapes that can have their area easily calculated; the area of the regular shapes can be added up to equal the total area of the irregular shape. One way to calculate the area of a regular shape, namely a rectangle, is to multiply the length of the rectangle by its width. Different methods are used to calculate the areas of other regular shapes, such as circles, triangles and squares.
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  • How many bases does a triangular prism have?

    Q: How many bases does a triangular prism have?

    A: A triangular prism has two bases, both of which are triangles. The remaining or lateral faces consist of three rectangles, for a total of five faces. If the two triangles are equilateral triangles, the lateral faces are squares.
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  • What are the properties of a cone?

    Q: What are the properties of a cone?

    A: A cone is a geometrical figure with one curved surface and one circular surface at the bottom. The top of the curved surface is called the apex of the cone. An edge that joins the curved surface with the circular surface is called the curved edge of the cone.
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  • What is a quadrilateral with exactly one pair of opposite sides that are parallel?

    Q: What is a quadrilateral with exactly one pair of opposite sides that are parallel?

    A: A quadrilateral with exactly one pair of opposite parallel sides is called a trapezoid. As with all quadrilaterals, the sum of the interior angles of a trapezoid is always equal to 360 degrees.
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  • What shape has at least one line of symmetry?

    Q: What shape has at least one line of symmetry?

    A: One shape that has at least one line of symmetry is a rectangle. A rectangle has two lines of symmetry. Line symmetry,is also known as reflection symmetry.
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  • What is a regular shape in math?

    Q: What is a regular shape in math?

    A: A regular shape, also known as a regular polygon, is a shape that has sides that are all equal. If there are sides of differing lengths, these shapes are known as irregular polygons.
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  • What geometric shape is a football?

    Q: What geometric shape is a football?

    A: An American football is shaped like a prolate spheroid, a continuously curved three-dimensional object that is longer than it is around. Footballs used for the game of soccer are truncated icosahedrons, three-dimensional objects with 32 sides.
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  • What is a five-sided polygon called?

    Q: What is a five-sided polygon called?

    A: A pentagon is the name for a five-sided polygon. However, there are different types of five-sided polygons, such as irregular, regular, concave and convex pentagons.
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  • What is the name of a 10-sided polygon?

    Q: What is the name of a 10-sided polygon?

    A: The name of a 10-sided polygon is a decagon. The term "decagon" comes from the modern Latin word "decagonum" and from the Greek "dekagonon," which is a combination of "deka," meaning "ten" and "gonia," meaning "corner" or "angle."
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  • What is a nine-sided shape called?

    Q: What is a nine-sided shape called?

    A: A nonagon is a closed shape that has nine sides. If it is a regular nonagon, all nine sides are the same length, and all the angles are equal.
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  • How many curved faces does a cone have?

    Q: How many curved faces does a cone have?

    A: A cone has a singular curved face. Cones consist of two main parts: a circular base and a curved top that spans from the outside of the base to a single point at the top.
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  • Is a kite a parallelogram?

    Q: Is a kite a parallelogram?

    A: A kite is a quadrilateral but not a parallelogram. Kites have two pairs of equal-length adjacent sides, with one pair shorter than the other. Parallelograms also have two pairs of equal-length sides, but their pairs are opposite and parallel to each other rather than adjacent.
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  • How many faces does a sphere have?

    Q: How many faces does a sphere have?

    A: A sphere has no faces. A sphere is defined as a round symmetrical object, while a face is defined a flat surface of an object. By definition a sphere does not have any faces.
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