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Geometry

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Domenica Schneider

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Cards in this guide (7)
When is a rhombus a rectangle

when its angles are right angles apex 5.5.3 quiz geometry.

When is a rectangle a square

A rectangle is a square when all of its sides are the same length.

A rectangle is SOMETIMES a square.

However, a square, is ALWAYS a rectangle.

This is due to the properties held by a rectangle as well as properties of a square.

Properties of Rectangle:

  • Opposite sides are congruent.
  • All angles are 90o.
  • Opposite sides are parallel.
  • Opposite central angles created by the diagonals are congruent.
  • All diagonals are congruent.

Properties of a Square:

  • All sides are congruent.
  • All angles are 90o.
  • Opposite sides are congruent.
  • Opposite sides are parallel.
  • Diagonals intersect at a 90o angle.
  • All diagonals are congruent.

So one can have a square that is always a rectangle due to the properties. However, a rectangle will only be a square if properties are the same as a square.

Sometimes

When all of its sides are exactly the same length.

In a given quadrilateral each side is parallel to its opposite side and the diagonals are not perpendicular What could it be

Parallelogram and a rectangle

Is the altitude of an equilateral triangle equal to a side length

No. The altitude is smaller.

The diagonals of a square are equal in length

Yes.

Which of these figures must be a rectangle

A parallelogram with at least one right angle

If the diagonals of a quadrilateral bisect each other then the quadrilateral is a parallelogram.

True

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