Angles

• A right angle measures exactly 90 degrees.
• A reflex angle is greater than 180 degrees but less than 360 degrees.
• An obtuse angle is greater than 90 degrees but less than 180 degrees.
• An obtuse angle is any angle greater than 90 degrees but less than 180 degrees.
• <S: >An acute angle is greater than 0 degrees and less than 90 degrees.
• A straight angle measures exactly 180 degrees.
• A straight angle is formed by a straight line and has no curvature.
• An obtuse angle is between 90 and 180 degrees.
• The sum of the angles in any triangle is always equal to 180 degrees.
• Supplementary angles are two angles that add up to 180 degrees.
• Complementary angles add up to 90 degrees.
• Supplementary angles add up to 180 degrees.
• Alternate angles are always the same
• Corresponding angles are equal when two parallel lines are cut by a transversal
• 120² = 120
• Vertical angles are always equal
• The sum of angles in a triangle is always 180 degrees
• Adjacent angles share a common ray and do not overlap
• Allied angles are angles that add up to 180 degrees
• The 32 different angles always add up to 180 degrees
• Vertical angles are opposite angles formed by the intersection of two lines