# Goal of the website

The goal of this math leaning website is: Serve as a math learning tool for all students, parents and teachers. Learning mathematics by understanding principle and examples. Apply math concepts to solve real world problems. Help middle school students prepare for high school. Help high school students prepare for college. Improve student’s math testing score in standard tests. Help student’s success in college study.

## Content includes

Prealgebra prime numbers, prime factoring, common factors, greatest common factor (GCF), simplify fraction, equivalent fractions, complex fraction when numerator is a fraction, complex fraction when denominator is a fraction, complex fraction when both numerator and denominator are fractions, least common multiple (LCM), least common denominator (LCD), compare fractions with common denominators, compare fractions with different denominators, compare fractions with same numerators and different denominators, improper fraction to mixed number, mixed number to fraction, add fractions with the same denominator, add fractions with different denominators, add mixed numbers with the same denominator, add mixed number with different denominators, subtract fraction with the same denominator, subtract fractions width different denominators, subtract mixed number with the same denominator, subtract mixed number with different denominators, multiply fractions, multiply fraction by mixed number, multiply mixed numbers, divide a whole number by a fraction, divide a fraction by a fraction, divide a fraction by a mixed number, divide mixed number by mixed number, rational numbers, positive exponents and zero exponent, negative exponents.

Algebra translate words into algebra expression, first degree equation examples, polynomials, polynomial multiplication, polynomial divide by monomial, algebra of fractions, complex fractions, one variable equations, two variable equations, inequalities, absolute value equation, first degree inequality, absolute value inequality, quadratic equation, radical equation, sequence, inverse function, quadratic absolute value inequality.

Geometry points, midpoint, lines, parallel lines, perpendicular lines, angle and angle pairs, angle measure, right angle, acute angle, obtuse angle, straight angle, adjacent angles, vertical angles, complementary angles, supplementary angles, corresponding angles, alternate interior angles, consecutive interior angles, testing parallel lines, testing perpendicular lines, triangle, interior angles of a triangle, exterior angle of a triangle, equilateral triangle, isosceles triangle, scalene triangle, right triangle, obtuse triangle, acute triangle, equiangular triangle, altitudes, medians and angle bisectors of a triangle, congruent triangles, similar triangles, triangle inequality theorem, quadrilaterals, parallelogram, special parallelogram, square, polygon.

Coordinate Geometry orthogonal plane, area of a triangle, Line equations, circle, lines and points, find analytical expression of a function from its graph, orthogonal plane examples, coordinate example, find the shortest segment, find area of the triangle, is a point inside a circle? is a point outside a circle? is a point on a circle? is a line intersecting a circle? is a line tangent a circle? is a line separate from a circle? are two circles intersecting? are two circles tangent to each other? are two circles separate from each other? find chord length, find line equation, find line equation if it tangent a circle and perpendicular to another line, find analytical expression of inverse function and line function, find analytical expression of a quadratic function.

Trigonometry quadrant angles, degree, radian and sector, any angle trigonometric functions, values of trigonometric function of special angles, graphs of Sine function and transformation, graphs of Cosine function and transformation, trigonometry function examples, find the maximum value of a function in an interval, sine function properties, graph of a sine function examples, logarithms definition example, logarithms equation example, parabola example, analytical geometry examples, application of parabola and hyperbola.

Asked Questions algebra expression, algebra equation, remove square root, quadratic equation, adjacent angle pairs, adjacent angles formed by perpendicular lines, adjacent angles formed by intersected lines, interior and exterior points of circle, graph of sine and cosine function, graph of y = sin (x - pi), draw the graph of y = -2 sin (x - pi/4), draw the graph of Sine square x, draw the graph of y = sin (3pi x), draw the graph of y = sin (x/3), draw the graph of y = 1/2sin (x pi/2), graph of y=2sin(x) and y=2cos(x), graph of y = cos (2 x pi/2), graph of y = 1 - cos (pi/4 - x), draw the graph of y = cos2x, graphs of y = sin(x) and y = csc(x), graph of y = csc4(x 3pi/2), graph of y = cot (x - pi/4), -cotangent(2(pi/4)), finding the value of tan (-945 degree), what is the formula of the tangent angles sum?

Probability probability event, probability definition, formula to solve probability problems, using table to solve probability problems, using tree to solve probability problems.

Algebra 1 Video Lessons translate word sentence into algebra expressions, translate word problems and solve equations, examples of word problem solving, one variable equation examples, two variables one-degree equations, number problem solving, inequality problem solving, polynomial, fraction equation, polynomial concept.

Geometry Video Lessons line segments, line and angles, parallel and angles, lines, triangle and angles, parallel lines, angle bisector and triangle, interior angles in a triangle, exterior angle of a triangle, isosceles triangles, triangles, right triangles, circles, circle triangle, rectangles, area of an obtuse triangle, area of an equilateral triangle, area of a triangle, area of a bow, congruent triangles, similar triangles, ratio, cylinder and sphere, orthogonal plane, coordinate plane, shortest segment.