An acute triangle.
Circle, cone, cylinder, sphere and equilateral triangle for example.
2, obtuse and reflex angles are larger than right angles A straight angle is larger.
A Triangle which do not have a right angle.
Right angle, obtuse angle, acute angle, supplementary angle, complementary angle, interior angle, exterior angle, adjacent angle
An acute triangle.
All triangles that are not right triangles.
Rectangle, octagon, hectagon, square...
Circle, cone, cylinder, sphere and equilateral triangle for example.
2, obtuse and reflex angles are larger than right angles A straight angle is larger.
A Triangle which do not have a right angle.
Right angle, obtuse angle, acute angle, supplementary angle, complementary angle, interior angle, exterior angle, adjacent angle
An equilateral triangle, which has 3 angles of 60o.
No plane geometric figure can have one acute and three right angle only, at least two other angles must be included
A right angled triangle.
A square only contains right angles, so there are no larger angles than a right angle in a square. If you meant how many angles are there larger than a right angle, then there are two answers. Literally speaking, there is an infinite number of angles greater than 90o, but what you're probably looking for is types of angles. There are to types of angles greater than a right angle: Obtuse (90<x<180) and Reflex (180<x<360).
A circle.