G9-MATH-L6 Lines and Angles

What is the definition of a line segment?

• A part of a line with two endpoints
• A part of a line with one endpoint
• A line that extends indefinitely in both directions
• A ray that forms an angle

Which of the following angles is classified as an obtuse angle?

• 45 degrees
• 90 degrees
• 120 degrees
• 180 degrees

If two angles are complementary, what is the sum of their measures?

• 90 degrees
• 180 degrees
• 360 degrees
• 270 degrees

What type of angles are formed when two lines intersect?

• Adjacent angles
• Complementary angles
• Vertically opposite angles
• Supplementary angles

Which statement is true about adjacent angles?

• They share a common vertex and arm
• They are always equal
• They cannot be supplementary
• They must be acute

What is the measure of a straight angle?

• 90 degrees
• 180 degrees
• 270 degrees
• 360 degrees

When two parallel lines are cut by a transversal, what can be said about the corresponding angles?

• They are always complementary
• They are always supplementary
• They are equal
• They are always obtuse

If the sum of two adjacent angles is 180 degrees, what can be concluded?

• They are complementary
• They are supplementary
• They are vertically opposite
• They are acute

Which of the following pairs of angles are a linear pair?

• Angles that share a common vertex and are equal
• Angles that are adjacent and their non-common arms form a line
• Angles that are complementary
• Angles that are supplementary

What is the relationship between vertically opposite angles when two lines intersect?

• They are always acute
• They are always equal
• They are always supplementary
• They are always complementary