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For the same reason that a cat is an animal but an animal is not always a cat.
Because a trapezoid is a special kind of quadrilateral.
A quadrilateral is anything with four sides.
A trapezoid has four sides, and also two of them are parallel to each other.
Therefore some quadrilaterals are trapezoids, but most of them aren't.
What else can I help you with?
Is every quadrilateral a trapezoid?
No, not every quadrilateral is a trapezoid, although a trapezoid is also a quadrilateral because it has four sides.
Is a trapezoid always a quadrilateral?
No. A quadrilateral is any four-sided figure. A trapezoid is one example of a quadrilateral.
What are all the names for the trapezoid?
All the names to classify a trapezoid are a trapezoid and a quadrilateral.
Is a trapezoid alw a quadrilateral?
A trapezoid will always be a 4 sided quadrilateral.
Is a trapezoid also a quadrilateral?
Yes a trapezoid is a quadrilateral. Quadrilateral means "four sided", and trapezoids have four sides.
Is a trapezoid just a quadrilateral?
Yes, a trapezoid is a quadrilateral.
Is every quadrilateral a trapezoid?
No, not every quadrilateral is a trapezoid, although a trapezoid is also a quadrilateral because it has four sides.
Is a trapezoid always a quadrilateral?
No. A quadrilateral is any four-sided figure. A trapezoid is one example of a quadrilateral.
Is it true that every trapezoid is a quadrilateral?
It is true that every trapezoid is a quadrilateral
What are all the names for the trapezoid?
All the names to classify a trapezoid are a trapezoid and a quadrilateral.
Is a trapezoid alw a quadrilateral?
A trapezoid will always be a 4 sided quadrilateral.
Is a trapezoid also a quadrilateral?
Yes a trapezoid is a quadrilateral. Quadrilateral means "four sided", and trapezoids have four sides.
Why is a trapezoid always a quadrilateral but a quadrilateral is not always a trapezoid?
Yes, because it has 4 sides.
Why can't a quadrilateral always be a trapezoid?
A trapezoid will always be a quadrilateral because it has 4 sides
Is a quadrilateral a trapezoid always sometimes or never?
A trapezoid is always a 4 sided quadrilateral
What type of quadrilateral is a trapezoid?
A isosceles trapezoid?
What are the 3names for a trapezoid?
Quadrilateral, polygon, and trapezoid.
