Bell Ringer: Quiz Review 1.) Define a.) Collineard.) Obtuse b.) Coplanare.) Right c.) Acute Solve for x 2.) 3.) A B C 2x + 115 AC = 8X + 4 A B C D 3x +

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Presentation transcript:

Bell Ringer: Quiz Review 1.) Define a.) Collineard.) Obtuse b.) Coplanare.) Right c.) Acute Solve for x 2.) 3.) A B C 2x AC = 8X + 4 A B C D 3x + 5 2x + 1 <ABC = 10x - 15

Section 1.5 Don't go around saying the world owes you a living. The world owes you nothing. It was here first. Mark Twain Mark Twain

Adjacent Angles – Two angles in the same plane with common vertex and side, but no common interior points (they don’t overlap) A B C D

Vertical Angles – Two non adjacent angles with a common vertex, but no common sides. (Formed by intersecting lines) Always Congruent ( =) A B C D E

Linear Pair – Two angles formed by a straight line, two adjacent angles whose non common sides are opposite rays. AB C D

Complementary angles – Sum of 90 Part A + Part B = 90 Supplementary angles – sum of 180 Part A + Part B = 180

Perpendicular Lines – Two lines that form a right (90 degree) angle Symbol:

Can you find each type of angle? Adjacent Linear Pair Supplementary Vertical A D E C H B G

Angle Bisector - splits an angle into two equal parts. < ABD = < DBC A B C D

Class Work Page # 7 – 15 #