Characters used: 213/ 15000 Part C
Measure the lengths of the sides of AABC and its three images, and record the measurements in the table.
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X
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A
А
DE I E
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ДАВС
Measure
AA'B'C
Measure
AA' B' C1
Measure
Measure
AA 2B 2C 2
A'B'2
AB
A'B
A'B'1
BC
BC
B'
B'2C2
AC
AC
A'zC2
AC,
Characters used: 155 / 15000
Part D
asures of the sides and apples of AABC compare with the corresponding measurements in the three

the answer is c

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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.

b

step-by-step explanation:

the word superfluous means unnecessary

207/8 is the right