What Triangle Congruence Theorem would this be?

Is a currency whose value is tied to another currency, meaning that the exchange is fixed

12. decide whether each statement is always true, sometimes true, or never true. a. when corresponding points of an original figure and its reflection are connected, the resulting segments are all perpendicular to the line of reflection. b. when a point is reflected over a horizontal line, the y-coordinate of the point stays the same. answer both questions and explain

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?