Answer all the questions below and press submit to see how many you got right.
Equation : An equation is a mathematical statement in which two expressions are written with an equal sign in between. A solution of an equation is a set of variables that makes the statement a true statement.
Expression : An expression is a succession of constants, variables and mathematical operations that if evaluated for specific values of the variables represents a number.
Height : In a triangle a height (or altitude) is the shortest line segment that connects a side to its opposing corner. A height of a triangle is perpendicular to the side is started at. The three heights of a triangle intersect in a point, the so called orthocenter of the triangle. In a parallelogram the height is the shortest distance between two opposing sides. In a pyramid the height is the shortest distance between the base area and the corner of the pyramid that is not part of the base area. In a prism the height is the shortest distance between the two base faces.
Inch : An inch or $in$ is a unit of measurement for length. 12 inches are one foot and 1 inch is about 2.54 $cm.$
Number : A number $x$ is a mathematical symbol representing a quantity.
Solution : A solution to an equation is a choice of variables that when substituted into the equation results in a true statement.
Peter is 40 inches tall and grows 4 inches every year. Let $n$ denote the number of years after which Peter is 60 inches tall. Which equation do you need to solve to find $n$?
Division : Division is the mathematical operation that divides objects equally into groups. More generally $x\div y$ is defined as the number that if multiplied by $y$ equals $x.$
Which x solves the equation 7x=21?
Area : The amount of unit squares that is needed to cover a 2-dimensional shape.
Base : When using the height of a triangle or parallelogram (for example in an area calculation), base refers to the side of the triangle or parallelogram that the height starts out at. In a logarithm $\log_{b}x$ or power $b^x$ base refers to the number $b.$
Centimeter : A centimeter ($cm$) is $\frac{1}{100}$ of a meter.
Half : A Half is the number equal to $\frac{1}{2}=0.5.$
Product : A product is the result of a multiplication.
Square centimeter : Square centimeter or $cm^2$ is a unit of measurement for measuring area. 1 square centimeter is the area of a square with side length 1 $cm,$ so 10,000 $cm^2$ are one $m^2.$
Triangle : A triangle is a polygon with three corners and three sides. You can calculate the area of a triangle by multiplying half the length of the base by the height on that base. The sum of the interior angles in a triangle is always $180^{\circ}.$
What is the area in square cm of a triangle with a base of 5 cm and a height of 3?