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a rectangle has 4 right angles, a parallelogram has 2 acute angles and 2 obtuse angles
all of the angles in a triangle add up to 180 but i cannot help you because the two angles could be anything?
3, if its congruent then the corresponding sides are equal. This answer is incorrect. You are asked about angles, not triangles. Ask your teacher for help.
3There are 3 angles in a triangle. All 3 angles must add up to 180 degrees. For more help go on Wikipedia and type in triangles
yes yes it can