Just one.
3
a cone doesn't contain any right angles fool !
One
16
No right triangle can have any obtuse angles inside it.
A two dimensional regular pentagon does not contain any right angles. A pentagonal prism, however, contains up to 10 right angles.
The 3 interior angles of any triangle always add up to 180 degrees
a triangle has 0 lines of symmetry.
A triangle has 3 vertices and 3 interior angles that add up to 180 degrees
Many shapes have a right angles. For example, a right angled triangle, square or rectangle all contain at least one right angle. Trapeziums may also contain right angles. Any irregular polygon may also contain a right angle.
None because it can only have 1 right angle and 2 acute angles to be a right angle triangle and the 3 angles add up to 180 degrees.
In the word "JOY," there is one right angle, which can be found in the letter "J." The other letters, "O" and "Y," do not contain any right angles. Thus, the total number of right angles in "JOY" is one.