Step 1: We know that angle cap t cap s cap r is congruent to angle cap q cap r cap s because all right angles are congruent. Step 2: We know that angle cap t is congruent to angle cap q because it is given. Step 3: We know that line segment cap s cap r is congruent to line segment cap r cap s because of the reflexive property. Step 4: triangle cap t cap s cap r is congruent to triangle cap q cap r cap s because