Angles, Parallel Lines, and Transversals (Algebra 1)

Questions and Answers

What is a right angle?

An angle equal to 90 degrees (correct)

An angle less than 90 degrees

An angle greater than 90 degrees

An angle equal to 180 degrees

What is an obtuse angle?

An angle between 90 and 180 degrees

What is an acute angle?

An angle that is less than 90 degrees but above 0 degrees

What are complementary angles?

Two angles that add up to 90 degrees Signup and view all the answers

What are supplementary angles?

Two angles whose sum is 180 degrees Signup and view all the answers

What are vertical angles?

A pair of opposite congruent angles formed by intersecting lines Signup and view all the answers

What is a transversal?

A line that intersects through two parallel lines Signup and view all the answers

What are interior angles?

The angles formed inside a transversal Signup and view all the answers

What are exterior angles?

The angles formed outside the lines of a transversal Signup and view all the answers

What are alternate exterior angles?

Angles outside the parallel lines, on opposite sides of the transversal Signup and view all the answers

What are alternate interior angles?

Angles formed inside the parallel lines on opposite sides of the transversal Signup and view all the answers

What are consecutive (same-side) interior angles?

Two interior angles lying on the same side of the transversal cutting across two parallel lines Signup and view all the answers

What are corresponding angles?

Angles created where a transversal crosses other lines that are in the same location at both intersections Signup and view all the answers

Study Notes

Angle Types

Right Angle: Measures exactly 90 degrees.
Obtuse Angle: Measures between 90 and 180 degrees.
Acute Angle: Measures less than 90 degrees but greater than 0 degrees.

Angle Relationships

Complementary Angles: Two angles that sum to 90 degrees.
Supplementary Angles: Two angles that sum to 180 degrees.
Vertical Angles: Formed by intersecting lines; they are opposite and congruent.

Transversals and Lines

Transversal: A line that intersects two parallel lines.
Interior Angles: Angles formed inside the area created by the transversal and the parallel lines.
Exterior Angles: Angles formed outside the area created by the transversal and the parallel lines.

Specific Angle Types with Transversals

Alternate Exterior Angles: Located outside the parallel lines on opposite sides of the transversal; these angles are congruent.
Alternate Interior Angles: Found inside the parallel lines on opposite sides of the transversal; these angles are also congruent.
Consecutive (Same-Side) Interior Angles: Interior angles located on the same side of the transversal; these angles are supplementary.
Corresponding Angles: Located at matching positions when a transversal crosses parallel lines; these angles are congruent.

Description

Test your knowledge of angles with this flashcard quiz covering key definitions such as right, obtuse, acute, complementary, and supplementary angles. Great for Algebra 1 students preparing for exams or reinforcing their understanding of geometry concepts.