3
Here's a list of shapes that need a right angle: square rectangle right triangle
A straight angle is a 180-degree angle. Therefore, any shape that has a side that forms a straight line can have a straight angle. This includes shapes such as a straight line segment, a rectangle, a square, a parallelogram, and a trapezoid.
rectangles
Angle
parallelogram
3
Here's a list of shapes that need a right angle: square rectangle right triangle
A straight angle is a 180-degree angle. Therefore, any shape that has a side that forms a straight line can have a straight angle. This includes shapes such as a straight line segment, a rectangle, a square, a parallelogram, and a trapezoid.
rectangles
There is no standard angle for a battlefield (not battlefeild!) since they come in all shapes.
Obtuse triangles have an obtuse angle, and regular shapes with a number of sides equal to or greater than five have angles that are all obtuse.
Penis
Pentagon.
Angle
Well the list will go on forever but an obtuse angle is an angle bigger than 90 degrees!
It is a point where two sides of the shape meet.