You could see them in squares.
Right angles of 90 degrees
Don't see that it can.
In the upper-case letter A? I see none, nor in lower case a either.
A trapezoid, although not all trapezoids will have two right angles. See the related link for a picture.
Yes, the 4 inside angles are right angles
There are 3 right angles in the letter F
Right angles of 90 degrees
A regular pentagon doesn't have any right angles ! See related link.
Don't see that it can.
I don't see any at all.
In the upper-case letter A? I see none, nor in lower case a either.
A rectangle, possibly a square. Can you see why a parallelogram must be a rectangle if any one of its angles is right?
A trapezoid, although not all trapezoids will have two right angles. See the related link for a picture.
... right angles, by definition of a rectangle.... right angles, by definition of a rectangle.... right angles, by definition of a rectangle.... right angles, by definition of a rectangle.
They are at right angles because the spreading occurs at right angles to the ridges. If you look you will see that the faults happen at places where the ridges bend and they allow for the differential movement required.
A kite has 4 right angles (all angles of the kite are right angles), since the kite is parallel. If the kite was cyclic, then 2 right angles. And if normal kite, then 0 right angles.
Yes, a rectangle has right angles. In fact it has 4 right angles.