Lesson 1-5 I can identify and use special pairs of angles I can identify perpendicular lines.

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Presentation transcript:

Lesson 1-5 I can identify and use special pairs of angles I can identify perpendicular lines

2 angles with a sum of 90° 2 angles with a sum of 180° 40° 50°

2 angles that share a vertex and side 2 adjacent angles that make a line

2 non-adjacent angles formed by intersecting lines

adjacent adjacent,linear pair vertical adjacent

supplementary, adjacent and linear pair

complementary

lines that intersect to form right angles A B X Y ┴ AB XY

9x x + 1= 90 12x + 6 = 90 12x = 84 x = 7

3x + 10 x 25 x+ 3x + 10= 90 4x + 10 = 90 4x = 80 x =

x 2x + 21 x+ 2x + 21= 90 3x + 21 = 90 3x = 69 x = ° and 67°

ASSIGNMENT: Lesson 1-5 worksheet Skip #8, 9, 10, and 13 Quiz on Wednesday (1-4 and 1-5) Test on FRIDAY!