"if a parallelogram has four right angles, then it is a rectangle." what is the inverse of this conditional statement? a. if a parallelogram has four right angles, then it is a rectangle. b. if a parallelogram does not have four right angles, then it is a rectangle. c. if a parallelogram has four right angles, then it is not a rectangle. d. if a parallelogram does not have four right angles, then it is not a rectangle.

If a parallelogram does not have four right angles, then it is not a rectangle.

Step-by-step explanation:

"If a parallelogram has four right angles, then it is a rectangle."

To get the inverse of the conditional statement, we take the negation of both the hypothesis and the conclusion.

So, the inverse of the given statement will be :

If a parallelogram does not have four right angles, then it is not a rectangle.

introduction, methodology, results, discussion

step-by-step explanation:

an observational study is one which consists of actual observation to record data and then analyse the data.

there are a number of factors that should be analyzed before starting an observational study.

the main four factors are:

i) introduction:   this should be analysed to check whether the purpose of the study is correctly established and the data recorded are appropriate for the study

methodology:   the method of collecting the data, such as whether randomly selected, and whether sample size matches with the population to be studied, whether questions asked are easy to answer by common men, etc.

results: then results such as summary of data with comments should be studied thoroughly

discussion:   the last is the discussion, this can be either by management people or persons who are all interested , etc.

34.5 cm

step-by-step explanation:

generally for a circular segment of angle, θ° and radius r

arc length

= (θ/360) x circumference

= (θ/360) x 2πr

in our case, θ = 60°, π=3.142 and r = 33 cm

substitute into above formula

arc length

= (60/360) x 2(3.142)( 33) = 34.5 cm