A right angle triangle
A angle less than 90 degrees is a acute angle.
An acute angle
An acute angle.
That is called an acute angle.
A right angle triangle
Yes.
No.
A chevron (arrowhead) is a quadrilateral with one angle of more than 1800.
A angle less than 90 degrees is a acute angle.
An angle less than 90 degrees is called an acute angle.
An angle greater than 90° and less than 180° is called an obtuse angle.
An angle that is less than 900 is called an acute angle.
An acute angle
An acute angle.
An angle that has a degree of less than 90 is called an acute angle.
obtuse angle