User:
• Matrices
• Algebra
• Geometry
• Graphs and functions
• 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 Equation of a line Equation of a line (from graph) Quadratic function Parallel, coincident and intersecting lines Asymptotes Limits Distances Continuity and discontinuities
 Sine Cosine Tangent Cosecant Secant Cotangent Trigonometric identities Law of cosines Law of sines
 Equations of a straight line Parallel, coincident and intersecting lines Distances Angles in space Inner product

# Longitud de un segmento sobre la recta numérica

 La longitud de un segmento corresponde con la distancia que separa a sus dos extremos. PQ=|x2-x1| = |x1-x2|

¿Cuánto mide el segmento EF?

La coordenada de E es 2 y la coordenada de F es 5. La longitud del segmento EF es la distancia que hay entre E y F, es decir:

EF = |5 – 2| = |3| = 3.

¿Cuánto mide el segmento AB?