Answer:
84 degrees
Step-by-step explanation:
Angle A = 83 degrees
Angle B = x degrees
Angle C = 135 degrees
Angle CDE = 122 degrees
We know that the four inner corners of a quadrilateral should add up to 360 degrees. Two supplementary angles will add up to 180 degrees. Adjacent angles on a straight line will always be supplementary. Knowing this, just solve for <ADC and add that amount to <A and <C. Then, subtract that sum from 360 degrees.
<ADC = 180-122 = 58
58+83+135 = 276
360-276 = 84 degrees
The 3rd one: "Converse of the Same-Side Interior Angles Postulate"
What are the number lines
3. The answer is .18 repeating because 2 divided by 11 gives it a repeating number.
4. The answer is .4 repeating
5. The answer is .25 terminating