A right angled triangle cannot have one angle of 32 degrees and another of 52 degrees. The two MUST sum to 90 degrees. Furthermore, information about the three angles is not sufficient to calculate any length for the triangle. You must know the length of at least one line - a side, an altitude or a median.
'a' and 'b' must both be acute, complementary angles.
A parallelogram cannot have just one right angle. If it has one, all four of its angles must be right angles and so it must be a rectangle (or, as a special case, a square).
An isosceles right triangle has an angle of 900 and two sides of equal length and two equal angles. Therefore other two angles must be 450.
A obtuse angle is called an obtuse angle because if obtuse means bigger in degrees and a right angle is 90 degrees than a obtuse angle must be over 90 degrees.
A parallelogram with at least one right angle
It has to be 90 degrees to be a right angle.
No plane geometric figure can have one acute and three right angle only, at least two other angles must be included
Every triangle must have at least 2 of them, and many triangles have 3 of them.
It could be a right angle or a reflex angle
That it must be a right angle triangle because the 3rd angle must be 90 degrees
Yes. The sum of the angles in a triangle is 180° All angles in a triangle must be greater than 0° which means that the sum of any two angles must be less than 180° If two angles are right angles (90°), their sum is 180° which is not less than 180°; thus at most one angle can be a right angle. If one angle is a right angle and another is an obtuse angle (greater than 90°), then their sum is greater than 180°, which is not less than 180°; thus there can be at most one of a right angle and an obtuse angle. If two angles are obtuse angles, their sum is greater than 180°, which is not less than 180°; thus there can be at most one obtuse angle. If there is at most one right angle or an obtuse angle, there must be at least two acute angles.
An equilateral triangle on on of the arms of the right angle.
Because the phrase 'right angle' indicates 90 degrees whereas there is no such angle as a 'left angle'
A right angle triangle must have a 90 degree angle and two acute angles.
A right-angle triangle must have one corner of 90 degrees.
Each interior angle of a regular pentagon is 108 degrees ie all five of them are larger than a right angle. If the pentagon is convex, at least four of the angles must be greater than 90 degrees.