What does it mean if diagonals are perpendicular? They bisect the vertex
where they intersect is a 90 degree angle
they are equal
they never intersect

they form a 90 degree angle

Step-by-step explanation:

perpendicular (⊥) always implies 90 degree angles

parallel (║) always implies they never intersect

an advantage of the standard deviation is that it increases as the dispersion of the data increases. e. the interquartile range is preferred when the data are not skewed or no have outliers. an advantage of the standard deviation is that it uses all the observations in its computation.

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

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