[color=#000000]Interact with the applet below for a few minutes. [br][br]Given : [br]1. The black angle for both triangle is same.[br]2. sides of red triangle is k times side of green triangle.[br][br][/color][color=#000000]Wite down your Observation in your own words :[br]1. Relationship between 2 triangles when k not equal to 1[br]2. Relationship between 2 triangles when k = 1[br][br][/color] 

1. For 2 triangles, if Side, Angle, Side are equal, then they are congruent (SAS congruency)[br][br]2. For 2 triangles, if an Angle is equal, and the two sides including the the equal angle are in fixed ratio, then the 2 triangles are Similar.