maths
ANGLES
Grade 10 - Investigation Practice
Complete this activity on binder leaf and
Submit for marking
⃞ .
10
Notes: Angle Relations & Parallel Lines
Pairs of angles are formed when parallel lines are cut by a transversal.
Their relationship can be any of the following:
Alternate angles
Angles at a point
Co-interior angles
Corresponding angles
Supplementary
Vertically opposite angles.
Type Your Answer Here
1. The diagrams below show a 5-shelf storage rack made of steel wire.
The side view shows a steel bar welded at an angle to provide structural support.
This bar makes an angle of 120° with one of the shelves. Use this measure to determine the angles marked by the letters.
(5 marks)
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Bonus
2. Draw a model of a building or town on binder leaves and submit.
The model must include:
A pair of parallel lines cut by a transversal.
At least 3 different types of angles (straight, right, acute, obtuse)
The size of a pair of:
Alternate angles
Co-interior angles
Corresponding angles
½ - Inclusion of parallel lines
½ - Inclusion of a transversal
½ - Inclusion of 3 types of angles
1½ - Accurate labeling of pairs of angles
2- Overall appearance and aesthetics.
(5 marks)