21⟩ What is ray?
A portion of a line with a fixed endpoint on one end that extends without bound in the other direction.
Geometric
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50 Geometric Questions And Answers
22⟩ What is correlation?
how two variables relate to each other
The measure of the linear relationship between two variables. Can be positive or negative, depending on which side of the bed it woke up on.
If this is present, then there is an apparent trend in bivariate data. Correlation is generally positive or negative.
A relationship between two variables. They can be low or high, negative or positive, but if two things are correlated, they are more than just casual acquaintances.
When two variables we've measured have some kind of association or relationship between them. It can be positive, negative, or not exist. The last one is the most depressing, naturally.
23⟩ What is complementary Angles?
A pair of angles whose measures sum to 90 degrees. Each angle in the pair is the other's complement.
24⟩ What is area?
The amount of space inside the boundary of a closed shape. As in, "there is x room to fit all the aliens inside Area 51."
The amount of space within the boundaries of a two-dimensional shape, reported in square units (like miles2 or feet2). Area is essentially space, but don't go around saying things like "area-ships," "area-cadets," or the "area-bar" on your keyboard.
The two-dimensional space contained by a particular region.
The amount of two-dimensional space that is taken up within a shape's perimeter.
A measurement of surface. It's like the amount of ground a piece of sod will cover, or exactly how much carpet we have to clean after spilling an entire crockpot of chili (oops).
The measure of the amount of space inside a polygon.
The amount of "stuff" inside of a figure. Very technical, we know.
25⟩ What is exterior Angle?
The larger part of an angle. Were one of the rays of an angle to be rotated until it met the other ray, an exterior angle is spanned by the greater rotation of the two possible rotations. The measure of an exterior angle is always greater than 180 degrees and is always 360 degrees minus the measure of the interior angle that accompanies it. Together, an interior and exterior angle span the entire plane.
26⟩ What is segment Bisector?
A line or segment that contains the midpoint of a segment.
27⟩ What are compound Events?
in probability, when there is more than one outcome, which may (taking a second card after a first has been chosen) or may not (throwing two dice at the same time) affect the outcome of the other
These are when more than one event occurs. For instance, instead of picking one card from a deck, you pick two cards and find the likelihood of a King of Hearts and Queen of Diamonds being selected. Things are getting a bit more complicated with this one.
When more than one event happens at once. The lions, tigers, and bears all arrive at the same time? We think you know how that one ends.
28⟩ What are parallel Lines?
Lines that never intersect.
29⟩ What is binomial?
A polynomial with two terms. These guys always use the buddy system.
A polynomial with two terms.
A polynomial with only two terms. The expression x – 3 is a binomial, and so is 96x2y + 13,0278,543.
A polynomial with two terms. You can probably guess what trinomial means.
A polynomial with 2 terms. An example would be 5x2 – 3.
30⟩ What is straight Angle?
A 180 degree angle. Formed by two rays that share a common vertex and point in opposite directions.
31⟩ What is transversal?
A line that intersects with two other lines.
32⟩ What is adjacent Angle?
Angles that share a vertex, one side, and no interior points.
33⟩ What are corresponding Angles?
when a transversal intersects two lines, these angles are in the same position on each line. When a transversal crosses two parallel lines, corresponding angles are congruent
Two angles that are in the same relative place compared to each of the two lines and the transversal that cuts them. Corresponding angles are congruent if and only if the two lines crossed by the transversal are parallel.
A pair of angles that are in the same place relative to the transversal and their respective parallel line. They're congruent, too.
Two angles that are in the same relative place compared to each of the two lines and the transversal that cuts them. Corresponding angles are congruent if and only if the two lines crossed by the transversal are parallel.
34⟩ What is coplanar?
on the same plane
Used to describe lines or points that are all on the same plane.
Used to describe lines or points that are all on the same plane.
35⟩ What is interior Angle?
The smaller part of an angle, spanned by the space between the rays that form an angle. Its measure is always less than 180 degrees, and is equal to 360 degrees minus the measure of the exterior angle.
36⟩ What are complementary Events?
in probability, results that do not overlap with one another (when flipping a coin, if you get a tail, then the complementary event is getting a head)
A pair of mutually exclusive events where the occurrence of one implies the non-occurrence of the other; this is represented by the fact that the respective Venn diagrams for these events do not overlap, and that the two events themselves comprise the entire sample space.
37⟩ What is radian?
A unit for measuring the size of an angle. One full rotation is equal to 2Π radians. One radian is equal to degrees.
38⟩ What is parallel Postulate?
A postulate which states that given a point not located on a line, exactly one line passes through the point that is parallel to original line.
39⟩ What is alternate Interior Angles?
Angles created when a transversal intersects with two lines. Alternate interior angles lie on opposite sides of the transversal, and on the interior of the space between the two lines. That is, they lie between the two lines that intersect with the transversal.
40⟩ What is congruent?
Of the same size. Angles can be congruent to other angles and segments can be congruent to other segments.
