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No, parallelograms and rectangles cannot have reflex angles. This is because
1. The sum of their interior angles must be 360 degrees.
2. Opposite angles must be equal.
3. If it were the case that a reflex angle existed, two angles would have to be greater than 180 by 2.
4. But by 1, the two angles would now sum over 360, and that cannot occur for a four-sided polygon.
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A parallelogram has four INTERNAL angles, they may be Acute, Right-Angled, or Obtuse.
However, the EXTERNAL angle corresponding to the given internal angle, will be a REFLEX Angle.
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If one angle in a parallelogram is it a rectangle?
If you mean if one of the angles is a right angle, then yes, because a rectangle is the only option left if it is to remain a parallelogram.
How do you prove that a parallelogram is a rectangle?
a rectangle has four right angles and opposite sides are all the same length This means that a parallelogram is not always a rectangle, but a rectangle is always a parallelogram, by definition.
If the diagonals of a parallelogram are congruent, then the parallelogram is a rectangle?
true.
What are the 4 quadrilaterals that have 2 pairs of parallel sides?
Parallelogram, rectangle, rhombus and square.Parallelogram, rectangle, rhombus and square.Parallelogram, rectangle, rhombus and square.Parallelogram, rectangle, rhombus and square.
What do you call a angle larger than 180 degrees?
Reflex angle
