QUESTION IMAGE
Question
- name a set of each type of angle pairs.
alternate interior angles ____ same side exterior angles ____
alternate exterior angles ____ corresponding angles ____
same side interior angles ____ vertical angles ____
To solve this, we identify a set (pair) for each angle type using the properties of parallel lines cut by a transversal:
Alternate Interior Angles
Let two parallel lines \( l \) and \( m \) be cut by a transversal \( t \). Alternate interior angles are non - adjacent, on opposite sides of the transversal, and inside the two lines. For example, \( \angle 3 \) and \( \angle 6 \) (if we label the angles formed in the standard way with \( l\parallel m \) and \( t \) as transversal). A common set is \( \boldsymbol{\angle 3} \) and \( \boldsymbol{\angle 6} \) (in the standard angle - labeling for parallel lines and transversal).
Same Side Exterior Angles
Same - side exterior angles are on the same side of the transversal and outside the two parallel lines. For example, if we have parallel lines \( l \) and \( m \) cut by transversal \( t \), \( \angle 1 \) and \( \angle 8 \) (using standard angle numbering) form a set of same - side exterior angles. So a set is \( \boldsymbol{\angle 1} \) and \( \boldsymbol{\angle 8} \).
Alternate Exterior Angles
Alternate exterior angles are on opposite sides of the transversal and outside the two parallel lines. For parallel lines \( l \) and \( m \) cut by transversal \( t \), \( \angle 1 \) and \( \angle 8 \) are same - side exterior, while \( \angle 1 \) and \( \angle 7 \) (wait, no, correct alternate exterior angles: \( \angle 1 \) and \( \angle 8 \) is same - side, alternate exterior would be \( \angle 1 \) and \( \angle 7 \)? No, let's recall: when \( l\parallel m \) and \( t \) is transversal, alternate exterior angles are \( \angle 1 \) and \( \angle 8 \)? No, I made a mistake. Let's use the correct definition. If the two parallel lines are \( l \) (top) and \( m \) (bottom), and transversal \( t \) crosses them, the angles above \( l \) and below \( m \) are exterior. Alternate exterior angles are \( \angle 1 \) (top - left exterior) and \( \angle 8 \) (bottom - right exterior)? No, better to take a concrete example. Let \( l\parallel m \), transversal \( t \). Angles: \( \angle 1 \) (top - left, exterior), \( \angle 2 \) (top - right, exterior), \( \angle 3 \) (top - left, interior), \( \angle 4 \) (top - right, interior), \( \angle 5 \) (bottom - left, interior), \( \angle 6 \) (bottom - right, interior), \( \angle 7 \) (bottom - left, exterior), \( \angle 8 \) (bottom - right, exterior). Then alternate exterior angles are \( \angle 1 \) and \( \angle 8 \)? No, \( \angle 1 \) and \( \angle 7 \) are same - side exterior, \( \angle 2 \) and \( \angle 8 \) are same - side exterior. Alternate exterior angles: \( \angle 1 \) and \( \angle 8 \) are not alternate, \( \angle 2 \) and \( \angle 7 \) are alternate exterior. So a set of alternate exterior angles is \( \boldsymbol{\angle 2} \) and \( \boldsymbol{\angle 7} \).
Corresponding Angles
Corresponding angles are in the same relative position at each intersection. For example, \( \angle 1 \) (top - left, exterior) and \( \angle 5 \) (bottom - left, interior) are not corresponding. Wait, \( \angle 1 \) (top - left, exterior) and \( \angle 5 \) (bottom - left, interior) – no, corresponding angles: \( \angle 1 \) and \( \angle 5 \) (same position: left - most, top and bottom), \( \angle 2 \) and \( \angle 6 \), \( \angle 3 \) and \( \angle 7 \), \( \angle 4 \) and \( \angle 8 \). So a set of corresponding angles is \( \boldsymbol{\angle 1} \) and \( \boldsymbol{\angle 5} \).
Same Side Interior Angles
Same - side interior angles are on the same side of the transversal and inside the two parallel lines. For example, \( \angle 3…
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s (Examples for each type):
- Alternate Interior Angles: \( \angle 3 \) and \( \angle 6 \)
- Same Side Exterior Angles: \( \angle 1 \) and \( \angle 8 \)
- Alternate Exterior Angles: \( \angle 2 \) and \( \angle 7 \)
- Corresponding Angles: \( \angle 1 \) and \( \angle 5 \)
- Same Side Interior Angles: \( \angle 3 \) and \( \angle 5 \)
- Vertical Angles: \( \angle 1 \) and \( \angle 3 \)