User:
• 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 Ecuación de una recta Equation of a line (from graph) Quadratic function Posición relativa de dos rectas Asymptotes Limits Distancias Continuity and discontinuities
 Sine Cosine Tangent Cosecant Secant Cotangent Trigonometric identities Law of cosines Law of sines
 Ecuación de una recta Posición relativa de dos rectas Distancias Angles in space Inner product

Similarity
Similar and congruent figures

Similar figures have equal corresponding angles and the length of their corresponding sides have equal ratios.

 Similar equlateral triangles Similar squares

Congruent figures have the same size as well as the same shape. They are similar figures that are equal in size.

 Congruent triangles Congruent squares Congruent rectangles Congruent Hexagons

Since $\frac{7}{10.5}=\frac{3}{4.5}=\frac{7}{10.5}=\frac{3}{4.5}$ , the measures of the sides of the polygons are proportional. The corresponding angles are congruent. Therefore, the polygons are similar.

Since $\frac{4}{3}=\frac{8}{6}=\frac{4}{3}=\frac{8}{6}$ , the measures of the sides of the polygons are proportional. However, the corresponding angles are not congruent. The polygons are not similar.