Lines and Angles

Which statement is always true?

1. Vertically opposite angles are supplementary.
2. Alternate interior angles are unequal.
3. Corresponding angles are equal when two parallel lines are cut by a transversal.
4. Complementary angles add up to 180°.

A transversal is a line that

1. Joins two points
2. Intersects two or more lines at distinct points
3. Is parallel to another line
4. Forms only right angles

If one angle is 135°, its supplementary angle is

1. 35°
2. 45°
3. 55°
4. 65°

If one angle is 40°, its complementary angle is

1. 40°
2. 50°
3. 140°
4. 150°

If two lines are parallel, interior angles on the same side of the transversal are

1. Equal
2. Complementary
3. Supplementary
4. Acute

Which pair of angles always forms a linear pair?

1. Adjacent angles whose non-common arms form a straight line
2. Vertically opposite angles
3. Complementary angles
4. Alternate interior angles

If one corresponding angle is 110°, the other corresponding angle is

1. 70°
2. 90°
3. 110°
4. 180°

Complementary angles have a sum of

1. 90°
2. 180°
3. 270°
4. 360°

If one of the vertically opposite angles is 120°, the other vertically opposite angle is

1. 60°
2. 90°
3. 120°
4. 180°

If corresponding angles are equal, then the two lines are

1. Perpendicular
2. Parallel
3. Intersecting only
4. Coincident

If two parallel lines are cut by a transversal, alternate interior angles are

1. Equal
2. Supplementary
3. Complementary
4. Unequal

Two angles are supplementary if their sum is

1. 90°
2. 120°
3. 180°
4. 360°

If one angle of a linear pair is 75°, the other angle is

1. 95°
2. 105°
3. 115°
4. 125°

The sum of the angles in a linear pair is

1. 90°
2. 180°
3. 270°
4. 360°

If two lines intersect, the vertically opposite angles are

1. Complementary
2. Supplementary
3. Equal
4. Unequal