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Lesson 3 angle between two intersecting lines

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Transcript of "Lesson 3 angle between two intersecting lines"

1. 1. ANGLE BETWEEN TWO INTERSECTING LINES Prepared by: Prof. Teresita P. Liwanag – ZapantaB.S.C.E., M.S.C.M., M.Ed. (Math-units), PhD-TM (on-going)
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3. 3. Examples:2.The line through the points (-1, 6) and (5, -2)intersects the line through (4, -4) and (1,7).Determine the angle between these twointersecting lines.3.The angle from the line through (x, -1) and(-3, -5) to the line through (2, -5) and (4, 1) is 45 .Find x.4.Two lines passing through (2, 3) make an angleof 45 . If the slope of one of the lines is 2, find theslope of the other.5.Find the interior angles of the triangle whosevertices are A (-3, -2), B (2, 5) and C (4,2).
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