The right arrow.
This could be the Tab key, or the Right Arrow key, depending on the context.
Opposite and adjacent sides.
Two sides adjacent to a right angle.
Yes, two right angles can be adjacent to one another. In the letter "T", it's formed by two adjacent right angles.
That's the cosine of the angle to which the 'adjacent' side is adjacent.
A square because a parallelogram has two parallel sides and have two adjacent right angles but a square and a rectangle have also a two adjacent right angles.
First: there can only be one hypotenuse in a right angled triangle and it is always OPPOSITE the right angle, NEVER adjacent.
Mutually perpendicular, adjacent sides.Mutually perpendicular, adjacent sides.Mutually perpendicular, adjacent sides.Mutually perpendicular, adjacent sides.
They can be.
Adjacent angles are angles right next to each other
No adjacent means having a common endpoint or border.
Yes, they can be adjacent as well as supplementary.