everything about angles

• A right angle is an angle equal to 90 degrees (1/4 turn).
• An acute angle is less than 90 degrees, while obtuse angles are greater than 90 degrees but less than 180 degrees.
• An acute angle is less than 90 degrees.
• An obtuse angle is greater than 90 degrees but less than 180 degrees.
• A reflex angle is greater than 180 degrees but less than 360 degrees.
• An obtuse angle is more than 90 degrees but less than 180 degrees.
• A straight angle is exactly 180 degrees.
• A complementary angle has two angles that add up to 90 degrees.
• Supplementary angles have two angles that add up to 180 degrees.
• to name an angle you need to use the vertex letter, using a number, using three capital letters
• a right angle measures 90 degrees
• angle bisector is a ray whose endpoint is the vertex of angle, that divides the angle into two congruent angles
• adjacent angles are two angles with common vertex, a common side, and no common points
• linear pair two angles form a linear pair when they are adjacent and supplementary
• complementary angles add up to 90 degrees
• supplementary angles add up to 180 degrees
• vertical angles are pairs of non-adjacent angles formed by intersecting lines
• corresponding angles are two angles on opposite sides of transversal which lie on the same line
• interior angles are all angles inside polygon