It is a right angle
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NO!!! All four angles are right-angles (90 degrees) The word 'rectangle' means -right-angled quadrilateral.
None. Obtuse means >90°; acute means <90°; a right angle = 90°. See Relevant Answers. Or look up "rectangle" in a dictionary; also "obtuse".
No it is impossible a triangle can have: 3 acute angles 1 right and 2 acute angles 1 obtuse and 2 acute angles
two! 2 are obtuse, 2 are acute If there are three right angles, then it makes it a parallelogram, ex: a square or a rectangle