Quadrilateral means four sides.
Four right angles and four sides is a rectangle and if the sides are equal length it is a square.
A quadrilateral can have two right angles and still not be a rectangle, if one side is oblique (neither right nor parallel) to the others, but three right angles force the fourth, and you have a rectangle.
true
A quadrilateral has four exterior angles, one at each vertex. The sum of these exterior angles is always 360 degrees, regardless of the shape of the quadrilateral. Each exterior angle is formed by extending one side of the quadrilateral at a vertex.
NO. A trapezoid cannot be a rectangle. If a parallelogram has one right angle then it is a rectangle. A trapezoid doesn't satisfy this condition because a trapezoid is a quadrilateral with exactly one parallel side which means that it doesn't have a right angle.
No, the circle is inscribed in the quadrilateral.
right angle?
A quadrilateral can have two right angles and still not be a rectangle, if one side is oblique (neither right nor parallel) to the others, but three right angles force the fourth, and you have a rectangle.
true
A quadrilateral has four exterior angles, one at each vertex. The sum of these exterior angles is always 360 degrees, regardless of the shape of the quadrilateral. Each exterior angle is formed by extending one side of the quadrilateral at a vertex.
Rectangle, possibly a square if the adjacent sides are also equal.
Lots of them, since there's nothing in the definition of quadrilateral that says each side must be equal. I've never heard of a particular name for one in English though.
NO. A trapezoid cannot be a rectangle. If a parallelogram has one right angle then it is a rectangle. A trapezoid doesn't satisfy this condition because a trapezoid is a quadrilateral with exactly one parallel side which means that it doesn't have a right angle.
No, the circle is inscribed in the quadrilateral.
The side opposite the right angle is called the hypotenuse.
The side opposite the right angle in a right angle triangle is its hypotenuse
The side opposite the right angle of a right angle triangle is the hypotenuse
No you could have Square, Rectangle, Rhombus, Parallelogram