Math 4th mastery

• Basic proportionality theorem


  A line parallel to one side of a triangle intersect the other two sides in distinct points
• AA Similarity Theorem 


  If two angles of a triangle are congruent to two angles of another triangle, then the triangle are similar
• Isosceles triangle 


  Base angle of an isosceles triangle are congruent
• SAS Similarity Theorem 


  an angle of are triangle is congruent to an angle of another triangle and the sides, including those angles are proportional
• SSS Similarity theorem


  the three pairs of corresponding sides of two triangles are proportional
• Similarity in a right triangle 


  An altitude is drawn to the hypotenuse of a right triangle
• Altitude Rule is the geometric mean bet segments into which divides the hypotenuse