The attic frame truss, shown to the right, provides open space in the center for storage. In this truss, ΔRPQ ≅ ΔLMN . List the congruent corresponding parts.

The construction of copying qpr is started below. the next step is to set the width of the compass to the length of ab. how does this step ensure that a new angle will be congruent to the original angle? by using compass take the measures of angle and draw the same arc according to it.