All in one. Step by step solution. 
This app includes a lot of mathematics topics such as geometry, analytic geometry, equations and inequalities, quadratic function, linear function, linear system, circle equation, math sequences, algebra, vectors.
It also contains units calculator.

GEOMETRY
- Triangles: equilateral triangle, right triangle, isosceles triangle, 30-60-90
- Quadrilaterals: square, rectangle, rhombus, parallelogram, trapezoid, right trapezoid, isosceles trapezoid, kite
- Polygons: regular pentagon regular hexagon, regular octagon, regular dodecagon
- circle, ellipse, annulus and annulus sector
- Solids of revolution: sphere, cylinder, cone, truncated cone, barrel, spherical sector, spherical cap, spherical wedge, spherical lune, spherical segment, spherical zone
- Prisms: cube, square prism, cuboid, triangular prism, regular triangular prism, hexagonal prism, pentagonal prism 
- Pyramids: regular tetrahedron, triangular pyramid, square pyramid, hexagonal pyramid
- Others: Pythagorean theorem, Thales' theorem, trigonometry, law of sines, law of cosines

EQUATIONS AND INEQUALITIES
- First and second degree
- Quadratic equation
- Quadratic inequality
- Linear equation
- Linear inequality
- Equations with parameter

ANALYTIC GEOMETRY
- Points and lines
- Intersection point
- Distance from point
- Length of the segment
- Parallel and Perpendicular line
- Perpendicular bisector
- Axial symmetry
- Central symmetry
- Translation by a vector
- Angle between lines
- Angle bisector
- Bisector of the angle between two lines
- Value of the angle from three points
- Position of a point relative to a line
- Relative position of two lines
- Relative position of three points
- Relative position of two circles
- Relative position of a circle and a line
- Relative position of a circle and a point
- Translation of a circle by a vector
- Circle reflection over point
- Circle reflection over line
- Circle with radius and two points
- Circle with center and point
- Circle with center and radius
- Circle with three points

QUADRATIC FUNCTION
- standard form
- vertex form
- factored form
- discriminant of the quadratic function
- real roots (zeros)
- vertex of a parabola
- intersection of the Y-Axis
- monotonicity (increasing, decreasing)
- positive and negative values (inequalities)

LINEAR FUNCTION
- slope-intercept form
- standard form
- distance between two points
- midpoint of a line segment
- line segment bisector
- parallel line
- perpendicular line
- distance from a point to a line
- equation of the line passing through 2 points

LINEAR SYSTEM
Four methods for solving systems:
- Substitution method 
- Elimination method 
- Graph method
- Method of determinants

CIRCLE EQUATION
- standard form
- general form
- tangent line to the circle

MATH SEQUENCES
- properties of geometric progression: initial term, any mth term and nth term, ratio, sum of n terms, general formula
- properties of arithmetic progression: initial term, any mth term and nth term, difference, sum of n terms, general formula
- properties of geometric series: initial term, ratio, sum

ALGEBRA
- greatest common divisor (gcd)
- least common multiple (lcm)

VECTORS
- 2D and 3D
- Length of a vector
- Dot product
- Cross product
- Addition and subtraction

UNITS (calculator)
- Length, distance
- Mass
- Velocity
- Power
- Pressure
- Temperature
- Time
- Energy
- Data

All you need in math, geometry, equations. Step by step solutions and formulas.