Acute, Right and obtuse Angles Acute Angle These angles are smaller than 90 degrees. Right Angle Right angles are equal to 90 degrees. Obtuse Angle An obtuse angle is greater than 90 degrees…. Register Login Contact us Related Posts via CategoriesGrade 4 Numeracy Sample May 2019Grade 4 Mathematics Performance Task May 2019Adding two digit numbers mentallySubtract any number from 1000Grade 4 Math Worksheets – Thousands!!!Grade Four Math Interactive GamesFraction problem generator, thousands of questionsGrade 4 Mixed Quiz–September 2015Subtracting Mixed Numbers with Like DenominatorsAdding Mixed Numbers with Like DenominatorsYou are doing well. Tell your friend, it is so good!