I need help I forgot all about this and I would appreciate it!
2 answers:
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check the picture below.
27)
since those angles on the other side, are alternate interior angles, then ∡RST = 110°.
28)
for the same reason, those angles on the outside are alternate interior angles to 110° and 120°, and those angles outside are linear angles with the ones inside, recall linear angles add up to 180°.
therefore ∡RST = 130°.
