Angle Relationships Teacher Twins©2014
Warm Up 49 + b + 45 = 180 x + 98 + 55 =180 15 + 67 + k = 180 b = 86
Angle Relationships
Angle Review acute right obtuse straight Angles that have measures less than 90⁰ are ___________ angles. Angles that have measures equal to 90⁰ are ___________ angles. Angles that have measures greater than 90⁰ are ___________ angles. Angles that have measures equal to 180⁰ are ___________ angles. acute right obtuse straight
__________ angles are opposite angles formed by lines that intersect __________ angles are opposite angles formed by lines that intersect. They are congruent. __________ angles share a common side and have the same vertex. They do not overlap. The sum of the measures of ____________ angles is 90⁰. The sum of the measures of ____________ angles is 180⁰. Vertical Adjacent complementary supplementary
Practice 1. 142⁰ 150⁰
Adjacent- a& b, b & c, c & d, d & e, e & f, f & a 3. List all of the vertical angles and all of the adjacent angles in the figure below. Vertical- a & d , b & e, f & c Adjacent- a& b, b & c, c & d, d & e, e & f, f & a c = 80⁰, d = 30⁰, e = 70⁰, f= 80⁰
Closure List all angle types for the picture below. < 1 acute, <2 obtuse, < 1 & 2 adjacent, straight, supplementary