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Geometry Period 1 Mrs. Connolly January 14, 2010 Homework: review sheet Next Test: TBA Today’s Notes: Agenda Review packet Classwork 1. Given the line 5y= -3x+6 write an equation of a parallel line that passes through the point (5,1) Remember parallel lines, same slope. Different y intercept write and equation of a perpendicular line that passes through the points (3,1) Geometry 2nd page Mrs. Connolly January 14, 2010 What is the relationship between a segment bisector and the segments midpoint? The midpoint is the point in the middle; it’s where the segment bisector cuts the line segment. Given a segment with endpoints A (2, -5) B (2 ,-1) Find the midpoint of AB Find the length of AB Find the slope of AB If two parallel lines are cut by a transversal Supplementary angles add to 180˚ Alternate interior angles are congruent Corresponding angles are congruent Alternate exterior angles are congruent A linear pair of angles add to 180˚ Geometry 3rd page Mrs. Connolly January 14, 2010 Vertical angles are formed by two intersecting lines and they are congruent If two angles are complementary, their measures add to 90˚ AB and CD intersect at point E, mAEC 6 x 20 , and mDEB 10 x . What is the mAED ? Angles A and B form a linear pair. The measure of angle A is 18 more than twice the measure of angle B. Find the measure of each angle. In the diagram: and is a transversal. m<JLB=6x and m<LJD=7x+5 what is the value of x? Add to 180 If Geometry 4th page Mrs. Connolly January 14, 2010 The ratio of the measures of two complementary angles is 5:4. What is the measure of the larger angle? Line 1 contained the points A(2, -1) and B(6, 7). Line 2 contained the points C(-3, -5) and D(5, -1). Are Line 1 and Line 2 parallel, perpendicular or neither? Mathematically explain how you know. Use the diagram of the rectangular solid to answer the following questions. K A B E F D H C M Name 3 collinear points Name 3 non-collinear points Name 4 coplanar points Name 4 non-coplanar points Name 2 parallel line segments Name 2 perpendicular line segments Name 2 skew line segments G