Math Question and answers already
passed 2026
Measures of central tendency - correct answer ✔Mean/arithmetic mean, median, mode, range
Mean - correct answer ✔The sum of the data values divided by the number of data values; average
Example: 2, 2, 3, 5, 2, 6, 2, 6, 7, 9, 11
(2 + 2 + 3 + 5 + 2 + 6 + 2 + 6 + 7 + 9 + 11)/11
55/11
Mean = 5
Median - correct answer ✔-The value in the middle so that there are an equal number of data values to
either side of it
-To find the median, arrange the data values from smallest to largest, including any repeats, then find
the middle value
-If there is an odd number of data values, one of the data values will be in the middle
-If there is an even number of data values, take the mean of the two middle values
Example: 2, 2, 3, 5, 2, 6, 2, 6, 7, 9, 11
2, 2, 2, 2, 3, 5, 6, 6, 7, 9, 11
Median = 5
Mode - correct answer ✔-The value repeated most often
-In order to have a mode, some score had to be repeated
,Example: 2, 2, 3, 5, 2, 6, 2, 6, 7, 9, 11
Mode = 2
Range - correct answer ✔The difference between the maximum and minimum scores
Example: 2, 2, 3, 5, 2, 6, 2, 6, 7, 9, 11
11 - 2
Range = 9
Probability - correct answer ✔-The comparison of the total number of favorable outcomes to the
number of possible outcomes
-Usually expressed in fraction form: total favorable outcomes / total possible outcomes
-Can also be expressed as percents or decimal values
Plane geometry - correct answer ✔The study of shapes and figures in two dimensions (the plane)
Solid geometry - correct answer ✔The study of shapes and figures in three dimensions
Point - correct answer ✔-The most fundamental idea in geometry
-Represented by a dot and named by a capital letter
Line - correct answer ✔-The shortest path connecting two points
-Continues forever in opposite directions
-Consists of an infinite number of points
-Named by any two points on the line
,-The symbol <—> written on top of two letters is used to denote that line
Line segment - correct answer ✔-A piece of a line
-Has two endpoints and is named by these two endpoints
-The symbol — written on top of two letters is used to denote that line segment
Ray - correct answer ✔-Has only one endpoint and continues forever in one direction
-Could be thought of as a half-line
-Named by the letter of its endpoint and any other point on the ray
-The symbol —> written on top of the two letters is used to denote that ray
Angle - correct answer ✔-Formed by two rays that start from the same point
-This point is called the vertex; the rays are called the sides o the angle
-Measured in degrees
-The degrees indicate the size of the angle, from one side to the other
Various ways an angle can be named - correct answer ✔-By the letter of the vertex; therefore, the
angle above could be named ∠A
-By the number (or small letter) in its interior; therefore, the angle above could be named ∠1
-By the letters of the three points that formed it; therefore, the angle above could be named ∠BAC, or
∠CAB. The center letter is always the letter of the vertex.
Adjacent angles - correct answer ✔Any angles that share a common side and a common vertex
In the diagram, ∠1 and ∠2 are adjacent angles.
, Right angle - correct answer ✔-Has a measure of 90°
-The symbol in the interior of an angle designates the fact that a right angle is formed
In the diagram, ∠ABC is a right angle.
Acute angle - correct answer ✔Any angle whose measure is less than 90°
In the diagram, ∠b is acute.
Obtuse angle - correct answer ✔Any angle whose measure is larger than 90° but less than 180°
In the diagram, ∠4 is an obtuse angle.
Straight angle - correct answer ✔Has a measure of 180°; also known as a line.
In the diagram, ∠BAC is a straight angle.
Complementary angles - correct answer ✔Two angles whose sum is 90°
In the diagram, since ∠ABC is a right angle, ∠1 + ∠2 = 90°.
Therefore, ∠1 and ∠2 are complementary angles. If ∠1 = 55°, its complement, ∠2, would be: 90° - 55° =
35°.
Supplementary angles - correct answer ✔Two angles whose sum is 180°
In the diagram, since ∠ABC is a straight angle, ∠3 + ∠4 = 180°.