PPT-Parallel Lines cut by a Transversal

Recall that parallel lines are two coplanar lines that never intersect AB CD A transversal is a line segment or ray that intersects two or more lines at different distinct points. Sections 3-1. What you’ll learn. How to identify the relationships between two lines or two planes. How to name angles formed by a pair of lines and a transversal. Vocabulary. . Parallel lines. Parallel planes. 8.G.5. Essential Question. ?. What can you conclude about the angles formed by parallel lines that are cut by a transversal?. Common Core Standard. :. 8.G ─Understand . congruence and similarity using physical models, transparencies, or geometry software.. Parallel and Perpendicular Lines. Perpendicular lines. are two lines that intersect to form a 90º. . angle. . Parallel and Perpendicular Lines. Parallel lines. are two lines that, if extended indefinitely, would never cross or touch. CH 3-Perpendicular & Parallel Lines. Geometry I. Takes you to the main menu. Takes you to the help page. There are other buttons explained throughout the PowerPoint. Navigating the PowerPoint. Main Menu. Lines Are Parallel. Objective:. After studying this section, you will be able to apply the exterior angle inequality theorem and use various methods to prove lines are parallel.. An exterior angle of a triangle is formed whenever a side of the triangle is extended to form an angle supplementary to the adjacent interior angle.. and Corresponding Angles. Congruent and Transversal. Transversal: A line that crosses two parallel lines.. Congruent: looks like .  . Vertical Angles. Vertical Angles: Intersecting lines form two pairs of vertical angles.. PART III. PARALLEL UNIVERSE. When two numbers are the same in mathematics, we say they are. equal.. When two figures in mathematics are exactly the same, we say they are . congruent.. Technically, . and a Transversal. Vocabulary. Parallel lines. : Lines in the same plane that have the same slope and never intersect. . Transversal. : A line that intersects two or more parallel lines.. Interior Angles. Transversal Line. Alternate. Plane H. m. n. t. 65. . 65. . Interior. Angles. If a transversal line passes through parallel lines the . ALTERNATING INTERIOR ANGLES . are . CONGRUENT. .. Interior. Students will be able to. Determine whether two lines are parallel. Write flow proofs. Define and apply the converse of the theorems from the previous section. Objectives. You can use certain angle pairs to determine if two lines are parallel. Algebra 1 Unit 5: Writing equations of lines. Parallel Lines. What are parallel lines?. Parallel lines are two lines that never intersect each other.. Where have you seen examples in real-life?. Lines on a road. CCSS. Content Standards. G.CO.1 Know precise definitions of angle, circle, perpendicular line, parallel line, and line segment, based on the undefined notions of point, line, distance along a line, and distance around a circular arc.. Section 3.1 Big Ideas Geometry. Parallel Lines: Two lines that do not intersect and are coplanar. The symbol for parallel is || and is read “is parallel to”. So m||n reads “line m is parallel to line n”. Draw a third line parallel to, and equidistant between, the first two lines.. Draw a two more lines parallel to the three lines so that you now have five equally spaced lines.. Decide which base pair you will draw, and on which side you will have the purine base and on which side you will have the pyrimidine base..