Please help!

In the figure, b and c are parallel lines. Which of the following statements are true?

1.Joe claims the measure of angle 3 is equal to 90 degrees. Is he correct, why or why not?
2.state the measure of angle 5 and how you know!

Here is the figure thank you for any help!! :)

1. why is a frequency distribution useful? it allows researchers to see the "shape" of the data. it tells researchers how often the mean occurs in a set of data. it can visually identify the mean. it ignores outliers. 2. the is defined by its mean and standard deviation alone. normal distribution frequency distribution median distribution marginal distribution 3. approximately % of the data in a given sample falls within three standard deviations of the mean if it is normally distributed. 95 68 34 99 4. a data set is said to be if the mean of the data is greater than the median of the data. normally distributed frequency distributed right-skewed left-skewed