GREEN HILLS ACADEMY
GRADE SIX MATHEMATICS
GEOMETRY
INSTRUCTIONS
Your answers should be in pencil only
TYPES OF ANGLES
Complementary Angles
Two angles are said to be complement, if their sum equals 90 degree. Use the definition of
complementary angle to solve the worksheet of matching complementary angles.
SUPPLEMENTARY ANGLES
Two angles are said to be supplement, if their sum equals 180 degree. Use the definition of
supplementary angle to solve the worksheets
Linear Pair angles
If a ray stands on a straight line, it forms a pair of angle. This pair is called as linear pair.
According to linear pair properties, the sum of the angles equal 180 degree
Vertical Angles
Vertical Angles are the angles opposite each other when two lines cross .If any two lines
intersect, at a point of intersection, it forms four angles. Vertically opposite angles are equal.
Two angles are given to identify the vertical angles easily. Identify rest of the two missing angles
in the worksheet given.
Corresponding Angles
When two parallel lines are crossed by another line (which is called a Transversal), the angles in
the matching corners are called corresponding angles.
Identify corresponding angles in parallel and transversal lines. Corresponding angles are equal.
Using the property of corresponding angle, find the missing angles
Alternate Angles
There are two types of alternate angles: Interior and Exterior. Use angle worksheets to identify
the missing alternate angles
Consecutive-interior Angles
Interior angles on the same side of transversal called as co-interior or consecutive interior angles.
Consecutive interior angels are supplement to each other.
Consecutive-exterior Angles
Exterior angles on the same side of transversal called as co-exterior or consecutive exterior
angles. Consecutive exterior angels are supplement to each other.