A multiple-choice quiz
by adams627.
Estimated time: 7 mins.

Quiz Answer Key and Fun Facts

Answer:
**Four**

Change the "H" in "hour" to get "four". Four is the only number with the same number of letters as its value, and it is the largest degree polynomial for which a formula exists to find its roots.

Change the "H" in "hour" to get "four". Four is the only number with the same number of letters as its value, and it is the largest degree polynomial for which a formula exists to find its roots.

Answer:
**Cone**

Change the "H" in "hone" to get "cone". Cones are essentially pyramids with a circular base. While most people are familiar with right cones, where the apex of the cone is directly above the center of the circular base, oblique cones are the opposite. A line from the vertex of an oblique cone to the center of the base is not perpendicular to the circle.

Change the "H" in "hone" to get "cone". Cones are essentially pyramids with a circular base. While most people are familiar with right cones, where the apex of the cone is directly above the center of the circular base, oblique cones are the opposite. A line from the vertex of an oblique cone to the center of the base is not perpendicular to the circle.

Answer:
**Sine**

Change the "H" in "shine" to get "sine." The sine function in trigonometry refers to the side of a right triangle opposite an angle, divided by the triangle's hypotenuse. When graphed, the sine function is a periodic "wave" that passes through the origin and repeats itself every 360 degrees, or 2pi radians.

Change the "H" in "shine" to get "sine." The sine function in trigonometry refers to the side of a right triangle opposite an angle, divided by the triangle's hypotenuse. When graphed, the sine function is a periodic "wave" that passes through the origin and repeats itself every 360 degrees, or 2pi radians.

Answer:
**Kite**

Change the "H" in "kith" to get "kite". Kites have two pairs of congruent sides, but the sides are adjacent, not opposite. The diagonals of a kite are perpendicular, and the shorter diagonal is bisected by the longer one.

Change the "H" in "kith" to get "kite". Kites have two pairs of congruent sides, but the sides are adjacent, not opposite. The diagonals of a kite are perpendicular, and the shorter diagonal is bisected by the longer one.

Answer:
**Focus **

Change the "H" in "hocus" (from hocus-pocus) to get "focus". Conic sections (circles, ellipses, hyperbolas, and parabolas) are often defined in terms of a focus. A parabola, for example, is the set of points equidistant from a certain point (focus) and a certain line (directrix).

The focus of a parabolic dish, such as a solar reflector, is where energy reflecting off the dish will collect.

Change the "H" in "hocus" (from hocus-pocus) to get "focus". Conic sections (circles, ellipses, hyperbolas, and parabolas) are often defined in terms of a focus. A parabola, for example, is the set of points equidistant from a certain point (focus) and a certain line (directrix).

The focus of a parabolic dish, such as a solar reflector, is where energy reflecting off the dish will collect.

Answer:
**Vector **

Change the "H" in "Hector" to "vector". Vectors represent physical quantities that have magnitude and direction (as opposed to scalars, which have only magnitude). Velocity is a vector; speed is a scalar. Solving physics problems often requires vector math.

Change the "H" in "Hector" to "vector". Vectors represent physical quantities that have magnitude and direction (as opposed to scalars, which have only magnitude). Velocity is a vector; speed is a scalar. Solving physics problems often requires vector math.

Answer:
**Eight**

Remove the "H" from "height" to get "eight". Eight is considered a magic number in Chinese culture: the 2008 Summer Olympics in Beijing began on 08/08/08, at 08:08:08 PM.

Remove the "H" from "height" to get "eight". Eight is considered a magic number in Chinese culture: the 2008 Summer Olympics in Beijing began on 08/08/08, at 08:08:08 PM.

Answer:
**Torus**

Change the "H" in "Horus" to "torus". A torus is a "donut" shape and is defined by an inner radius and an outer radius. The volume of a torus is given by the circumerference of the outer circle multiplied by the radius of the torus' solid region. This can be derived by defining a torus as a cylinder wrapped around so that its bases are touching.

Change the "H" in "Horus" to "torus". A torus is a "donut" shape and is defined by an inner radius and an outer radius. The volume of a torus is given by the circumerference of the outer circle multiplied by the radius of the torus' solid region. This can be derived by defining a torus as a cylinder wrapped around so that its bases are touching.

Answer:
**Arc**

Remove the "H" from "arch" to get "arc". An arc in math is defined as the part of a circle's circumference intercepted by two radii or an angle. Arc length can be measured by length or by angle. A 60 degree angle on a circle where the center of the circle is the vertex will intercept a 60 degree arc.

Remove the "H" from "arch" to get "arc". An arc in math is defined as the part of a circle's circumference intercepted by two radii or an angle. Arc length can be measured by length or by angle. A 60 degree angle on a circle where the center of the circle is the vertex will intercept a 60 degree arc.

Answer:
**Golden**

Change the "H" in "Holden" (Holden Caulfield, "The Catcher in the Rye") to get "Golden". The positive root of the equation x^2 - x - 1, the golden mean/ratio is equal to the square root of 5, plus 1, all over 2. For some reason, this ratio is repeated in nature (a nautilus' shell creates a so-called golden spiral), architecture (the Parthenon's columns are spaced by the ratio), art (Da Vinci used the ratio to divide the human body in "The Vitruvian Man"), and even musical works, such as those by Debussy and Erik Satie.

The quotient of consecutive numbers in the Fibonacci sequence approaches the golden ratio, which is also written with the Greek letter phi.

Change the "H" in "Holden" (Holden Caulfield, "The Catcher in the Rye") to get "Golden". The positive root of the equation x^2 - x - 1, the golden mean/ratio is equal to the square root of 5, plus 1, all over 2. For some reason, this ratio is repeated in nature (a nautilus' shell creates a so-called golden spiral), architecture (the Parthenon's columns are spaced by the ratio), art (Da Vinci used the ratio to divide the human body in "The Vitruvian Man"), and even musical works, such as those by Debussy and Erik Satie.

The quotient of consecutive numbers in the Fibonacci sequence approaches the golden ratio, which is also written with the Greek letter phi.

This quiz was reviewed by FunTrivia editor crisw before going online.

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