A 90 degree angle is a right angle.
A parallelogram doesn't necessarily have any perpendicular sides, but it can. If it has one single 90-degree angle, then it has four of them, and it's a rectangle or square. A parallelogram without perpendicular sides is a rhomboid or rhombus.
Two consecutive angles of a parallelogram always add up to 180 degrees. So, if the figure actually IS a parallelogram, and if it has a 54-degree angle, then it has two of them, and the other two are 124 degrees each.
A right angle is a 90 degree angle.
A right angle is a 90 degree angle.
Since a parallelogram has two sets of parallel sides, a parallelogram containing a 90 degree angle would precisely resemble a square.
It looks like (and is) a rectangle. All angles will be 90 degrees.
Rectangles and squares are the only parallelograms that contain 90 degree angles.
A parallelogram doesn't necessarily have any perpendicular sides, but it can. If it has one single 90-degree angle, then it has four of them, and it's a rectangle.
A parallelogram doesn't necessarily have any perpendicular sides, but it can. If it has one single 90-degree angle, then it has four of them, and it's a rectangle.
A 90 degree angle is a right angle.
A rhombus, trapezoid or parallelogram could all contain a 45 degree vertex. Squares and rectangles only have 90 degree vertices.
You need only 1 90 degree angle.
A 90 degree angle is a right angle
A 90 degree angle
A 90-degree angle is a right angle.
A rhombus, trapezoid or parallelogram could all contain a 45 degree vertex. Squares and rectangles only have 90 degree vertices.