Lines and Angles Review

How do you identify a right angle in a diagram?

• A right angle is often marked with a small square in the corner of the angle.

• A right angle is always 90 degrees and can be identified by measuring with a protractor.

• A right angle is indicated by a curved line in the corner of the angle.

• A right angle is marked with a triangle in the corner of the angle.

What are complementary angles?

• Two angles whose measures add up to 90 degrees.

• Two angles that are equal in measure.

• Two angles that add up to 180 degrees.

• Two angles that are adjacent to each other.

What is an obtuse angle?

• An angle that measures exactly 90 degrees.

• An angle that measures less than 90 degrees.

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

• An angle that measures exactly 180 degrees.

How do you identify an obtuse angle in a diagram?

• An obtuse angle measures more than 90 degrees but less than 180 degrees, appearing wider.

• An obtuse angle measures exactly 90 degrees, appearing as a right angle.

• An obtuse angle measures less than 90 degrees, appearing sharp.

• An obtuse angle measures more than 180 degrees, appearing straight.

What are parallel lines?

• Two lines that are always the same distance apart and never intersect.

• Two lines that meet at a point.

• Two lines that are perpendicular to each other.

• Two lines that can intersect at multiple points.

What is a straight angle?

• An angle that measures exactly 90 degrees.

• An angle that measures exactly 180 degrees.

• An angle that measures less than 90 degrees.

• An angle that measures more than 180 degrees.

What are supplementary 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 the sum of angles in a triangle?

• 90 degrees

• 180 degrees

• 360 degrees

• 120 degrees

What is a line segment?

• A line segment is part of a line that has two endpoints.

• A line segment is a line that extends infinitely in both directions.

• A line segment is a straight path that has only one endpoint.

• A line segment is a curved line that connects two points.

What is the relationship between perpendicular lines and angles?

• Perpendicular lines intersect to form right angles (90 degrees).

• Perpendicular lines are always parallel to each other.

• Perpendicular lines do not form any angles.

• Perpendicular lines intersect to form acute angles.