Agenda * Sign up for Quizlet Class * Parallel Lines & Transversals Notes
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1 Agenda * Sign up for Quizlet Class * Parallel Lines & Transversals Notes Objective: Students analyze parallel lines cut by a transversal and the angle relationships that are formed
2 1) Scan QR Code 2) Login or Sign up with google 3) Join Math 7 Class
3 Parallel Lines & Transversals Objective: Students analyze parallel lines cut by a transversal and the angle relationships that are formed
4 The figure below shows two parallel lines, r and s. The parallel lines are intersected by a transversal, t. A transversal is a line that intersects two or more lines. Special pairs of angles are formed when a transversal intersects two parallel lines.
5 Corresponding Angles are on the same side of the transversal and on the same side of the parallel lines. In other words, corresponding angles lie in the same position relative to the points of intersection. <1 is in the upper left section of the intersecting lines r and t. <5 is in the upper left section of the intersection of lines s and t. List the other pairs of corresponding angles:
6 Alternate Exterior Angles are outside the parallel lines and on opposite sides of the transversal. Alternate exterior angles have the same measure. <2 is above line r and <8 is below line s. They are on opposites sides of the transversal so <2 and <8 are alternate exterior angles List the other pair of alternate exterior angles:
7 Alternate Interior Angles are inside the parallel lines and on opposite sides of the transversal. Alternate interior angles have the same measure. <3 is below line r and <5 is above line s. The angles are on opposites sides of the transversal so <3 and <5 are alternate interior angles List the other pair of alternate interior angles:
8 Vertical Angles are opposite angles formed by two intersecting lines. Vertical angles have the same measure. <2 and <4 are both formed by the intersection of line r and line t. The angles are opposite of each other, so <2 and <4 are vertical angles. List the other pairs of vertical angles:
9 Same-Side Interior Angles are between parallel lines and on the same side of the transversal. Same-side interior angles are supplementary angles. The measure of supplementary angles add to 180. <3 and <6 are between lines and to the right of the transversal, so <3 and <6 are same side interior angles. List the other pair of same side interior angles:
10 Grab your device and teammates because it's time to...
11 Homework * Example 1 only from Angles Packet * Geometry Vocab Slides due Friday, 4/13
12 Agenda * Warm-up * Complete Parallel Lines & Transversal Lesson * Monster Quiz (if time) * Homework * Geometry Vocab Slides due Friday, 4/13 * Q4:1 Weekly Check-up due Fri. 4/13
13 Warm-up Which set of 3 sides lengths could form a triangle? A: 4, 6, 10 C: 5, 12, 13 B: 5, 6, 12 D: 7, 15, 7
14 Example 1 Line l and m are parallel and intersected by transversal n. Identify all pairs of corresponding angles, alternate exterior angles, vertical angles, alternate interior angles, and same-side interior angles in the figure below.
15 Example 2 In the figure below, a and b, are parallel lines cut by transversals c and d. What are the missing angle measures in the figure?
16 Monster Quiz
17 HOMEWORK
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