[color=#000000]Definition of [/color][color=#38761d][b]Congruent Angles[/b][/color][color=#000000]:[/color][br][color=#38761d][b]Two angles are congruent angles[/b][/color] if and only if one angle can be mapped onto another using any composition of one or more rigid transformation ([color=#980000]translation[/color], rotation, reflection).[br][br]This description (definition) above is what [i][color=#980000][b]causes[/b][/color][/i] two angles to be congruent. [br]The [i][color=#980000][b]effect? [/b][/color][/i]If 2 angles are congruent, then they [b][color=#980000]consequently[/color][/b] are the same size and measure.