Angles that contain the same number of degrees.
An angle that has a square corner because it is fromed by perpendicular lines. All right angles are 90*.
Angles that are less than 90*.
Angles that are more than 90 but less than 180.
Angles that are 180*.
They have 3 angles. The sum of the angles of any triangle is 180*.
( A+ B+ C=180*)
A triangle that has one right angle.
A triangle that has 2 congruent sides.
A triangle that has 3 congruent sides.