Given polygon DEFGH ≅ polygon QRSTU . What is the measure of ∠R ? Enter your answer in the box. m∠R = ° An irregular pentagon with vertices labeled D E F G and H. Angle D measures 60 degrees. Angle E measures 143 degrees. Angle F has a right angle symbol. Angle G measures 102 degrees. Angle H measures 145 degrees. A second irregular pentagon with vertices labeled Q R S T and U.