P6 Math · Chapter 8brightbit.net/worksheets

Angles with Parallel Lines

Name: ______________________Class: ________Date: ____________Score: ____ / 10

1.
Two parallel lines are cut by a transversal. One alternate interior angle is 65°. Find the other alternate interior angle.
Answer: ____________________________________
2.
Co-interior (same-side interior) angles formed by a transversal with parallel lines sum to:
(a) 90°(b) 120°(c) 180°(d) 360°
3.
Corresponding angles formed by a transversal with parallel lines are:
(a) Supplementary (add to 180°)(b) Complementary (add to 90°)(c) Equal(d) Vertically opposite
4.
A transversal cuts two parallel lines. A co-interior angle is 110°. Find the other co-interior angle.
Answer: ____________________________________
5.
In a diagram, angle a and angle b are alternate interior angles. Angle a = 3x + 10 and angle b = 5x − 20. Find x.
Answer: ____________________________________
6.
Vertically opposite angles are always:
(a) Supplementary(b) Complementary(c) Equal(d) Adjacent
7.
Two parallel lines are cut by a transversal. One corresponding angle is (2y + 15)° and the other is (4y − 25)°. Find y.
Answer: ____________________________________
8.
A straight line is crossed by two parallel lines. Name the THREE angle relationships this creates.
9.
Two straight lines cross. One angle is 55°. Find all four angles formed.
Answer: ____________________________________
10.
Angle p and angle q are co-interior angles. p = 4x and q = 2x. Find x and both angles.
Answer: ____________________________________

Answer key — P6 Math: Angles with Parallel Lines

For parents. Step-by-step explanations for every question are free on brightbit.net.

1.65°
2.(c) 180°
3.(c) Equal
4.70°
5.15
6.(c) Equal
7.20
8.Corresponding angles (equal), alternate interior angles (equal), co-interior angles (supplementary / add to 180°)
9.55°, 125°, 55°, 125°
10.x = 30, p = 120°, q = 60°

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Answer key — P6 Math: Angles with Parallel Lines

For parents. Step-by-step explanations for every question are free on brightbit.net.

1.65°

2.(c) 180°

3.(c) Equal

4.70°

5.15

6.(c) Equal

7.20

8.Corresponding angles (equal), alternate interior angles (equal), co-interior angles (supplementary / add to 180°)

9.55°, 125°, 55°, 125°

10.x = 30, p = 120°, q = 60°

Free worksheet from BrightBit · more free P1–P6 worksheets at brightbit.net/worksheets