Answer all the questions below and press submit to see how many you got right.
Coordinate : A coordinate is a number that describes the location of a point in space with respect to a direction.
Coordinate system : A coordinate system is a system to describe and visualize points in space (most commonly a two-dimensional or three-dimensional space). Every point is described by a number of coordinates equal to the dimension of the space.
Map : In mathematics mapping means assigning exactly one value to an object. A function maps every $x$ to exactly one $y.$
Negative : A number is negative if it is $\lt 0.$
Point : A point is an element in a space. Shapes are made of sets of points.
Reflection : A reflection is a transformation that mirrors a shape at a line. Reflections turn shapes into congruent shapes.
X-axis : The horizontal axis in a two-dimensional coordinate system.
X-coordinate : The first coordinate in a two-dimensional coordinate system.
Y-coordinate : The second coordinate in a two-dimensional coordinate system.
What are the coordinates (a,b) of the point (1,0) in the coordinate system after it is reflected on the x-axis?
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.
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.
Parallelogram : A parallelogram is a quadrilateral with 2 pairs of parallel sides. Rectangles, rhombuses and squares are special kinds of parallelograms.
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 $m^2.$
What is the area in square cm of a parallelogram that has a base of 4 cm and a height of 4 cm?
Addition : Addition is the mathematical operation that describes increasing a number by an amount equal to a second number. The mathematical symbol for addition is the plus sign $+.$ The term addition is also used for a generalization of this basic operation on numbers to functions, vectors and matrices.
Alternate interior angle : When two parallel lines are crossed by a third line, alternate interior angles are a pair of angles that are between the two parallel lines and are on opposites sides of the crossing line. Alternate interior angles are equal.
Angle : If two line segments (or rays) both start at a common point the opening between the two line segments is called an angle. The common point is called vertex of the angle. The size of an angle is measured in degrees.
Line : A line AB is a one-dimensional shape that includes the points A and B, all the points on the line segment in between A and B and all the points of the straight extension of the line segment beyond A and B. A line does not have an endpoint.
Parallel : Two lines in a two-dimensional plane are called parallel if they never cross.
Straight angle : A straight angle is an angle equal to $180^{\circ}.$
Which statements are true about the angles $a, b, c, d, e, f, g$ and $h$ at the crossings of the line EF with the parallel lines AB and CD in the picture above?