Grade 11 Angle Rules Worksheet
This worksheet covers various angle rules including angles on a straight line, angles around a point, vertically opposite angles, and angles in parallel lines for Grade 11 students.
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Grade 11 Angle Rules Worksheet
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Read each question carefully and answer to the best of your ability. Show all your work for full credit.
1. Find the value of x in the diagram below.
x =
2. The sum of angles around a point is always degrees.
3. If three angles around a point are 90°, 120°, and y°, then y = .
4. In the intersection of two straight lines, if one angle is 75°, what is the measure of its vertically opposite angle? Draw a diagram to illustrate.
Vertically opposite angle =
5. Which of the following angle pairs are NOT always equal when two parallel lines are intersected by a transversal?
Alternate interior angles
Corresponding angles
Consecutive interior angles
Vertically opposite angles
6. In the diagram below, lines L1 and L2 are parallel. Find the values of a, b, and c.
a =
b =
c =
7. Complementary angles add up to 180°.
True
False
8. Supplementary angles add up to 90°.
True
False
9. Two angles are in the ratio 2:3 and they are supplementary. Find the measure of each angle.