Question

Lines

AB
and
CD
(if present in the picture) are straight lines. Fill in the blank to find x.
Chapter Reference
b

Statement Reason
1. m∠AOC +m∠COE +m∠______ = m∠ ______ _________________________
2. m∠AOB = ________ _________________________
3. m∠EOB = ________ _________________________
4. x + ______ +90°=180°
Substitution
5. x = ________ Algebra

Answer 1

x= 45

Explanation:

angle EOB = 90 degrees so angle EOA must also be 90 degrees. Divide 90 by 2 = 45. You can figure out the rest from now on.