Lines and Angles

What is a line segment?

• A part of a line that has two endpoints.

• A line that extends infinitely in both directions.

• A point on a line that has no length.

• A curve that connects two points.

What is a line?

• A straight path that extends infinitely in both directions.

• A curved path that connects two points.

• A segment of a circle.

• A shape with three sides.

What are complementary angles?

• Two angles that add up to 90 degrees.

• Two angles that add up to 180 degrees.

• Two angles that are equal in measure.

• Two angles that are adjacent to each other.

What is a ray?

• A part of a line that has one endpoint and extends infinitely in one direction.

• A line that has two endpoints and does not extend infinitely.

• A point in space that has no length or width.

• A part of a circle that connects two points on the circumference.

What are parallel lines?

• Lines that intersect at a right angle.

• Lines that never meet and are always the same distance apart.

• Lines that converge at a point.

• Lines that are curved and do not follow a straight path.

What is a right triangle?

• A triangle that has one right angle.

• A triangle with all sides equal.

• A triangle that has no angles greater than 90 degrees.

• A triangle that has two acute angles.

What is a straight angle?

• An angle that is exactly 90 degrees.

• An angle that is exactly 180 degrees.

• An angle that is less than 90 degrees.

• An angle that is more than 180 degrees.

What are supplementary angles?

• Two angles that add up to 180 degrees.

• Two angles that add up to 90 degrees.

• Two angles that are equal in measure.

• Two angles that are adjacent to each other.

What is a right angle?

• An angle that is exactly 90 degrees.

• An angle that is less than 90 degrees.

• An angle that is more than 90 degrees but less than 180 degrees.

• An angle that is exactly 180 degrees.

What is the sum of angles in a triangle?

• 90 degrees

• 180 degrees

• 360 degrees

• 120 degrees