  • Matrices
• Algebra
• Geometry
• Funciones
• Trigonometry
• Coordinate geometry
• Combinatorics
 Suma y resta Producto por escalar Producto Inversa
 Monomials Polynomials Special products Equations Quadratic equations Radical expressions Systems of equations Sequences and series Inner product Exponential equations Matrices Determinants Inverse of a matrix Logarithmic equations Systems of 3 variables equations
 2-D Shapes Areas Pythagorean Theorem Distances
 Graphs Definition of slope Positive or negative slope Determine slope of a line EcuaciÃ³n de una recta Equation of a line (from graph) Quadratic function PosiciÃ³n relativa de dos rectas Asymptotes Limits Distancias Continuity and discontinuities
 Sine Cosine Tangent Cosecant Secant Cotangent Trigonometric identities Law of cosines Law of sines
 EcuaciÃ³n de una recta PosiciÃ³n relativa de dos rectas Distancias Angles in space Inner product

Concave and convex polygons

Concave and convex polygons
A polygon is convex if and only if the line segment connecting any two points in the polygonal region lies entirely within the region. If a polygon is not convex, it is called concave or nonconvex.  Convex polygons Concave polygons

A convex polygon has all diagonals within the figure. Also all interior angles are less than 180º. A concave polygon (caves in) has at least one diagonal outside the figure. Also, at least one interior angle is greater than 180º. 