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Mathematics 8 Online
OpenStudy (anonymous):

Classify the angles in questions 1–3 below. 1. (1 point) • acute • right • obtuse • straight 2. (1 point) • acute • right • obtuse • straight 3. (1 point) • acute • right • obtuse • straight

OpenStudy (anonymous):

4. Identify the angles as complementary or supplementary and then find the value of x. (1 point) • supplementary, 65º • complementary, 155º • complementary, 65º • supplementary, 155º 5. Which equation can be used to find the value of x in this figure? (1 point) • 90 + x = 106 • 106 – x = 74 • 106 + x = 180 • none of these

OpenStudy (anonymous):

here are the pictures for each question

OpenStudy (anonymous):

OpenStudy (anonymous):

OpenStudy (anonymous):

OpenStudy (anonymous):

OpenStudy (anonymous):

help please

imqwerty (imqwerty):

okay :) 1st lets see what these terms mean- • acute • right • obtuse • straight

imqwerty (imqwerty):

do you know what a 90 degree angle is?

OpenStudy (anonymous):

no

imqwerty (imqwerty):

okay i'll tell so this is what a 90 degree angle looks like->|dw:1452187146435:dw|

imqwerty (imqwerty):

and if an angle is 90 degrees then we call it right angle

OpenStudy (anonymous):

ok

imqwerty (imqwerty):

if the angle is smaller than 90 degrees then we call it acute angle

imqwerty (imqwerty):

and if the angle is bigger than 90 degrees then we call it obtuse angle

OpenStudy (anonymous):

so the answr is A

imqwerty (imqwerty):

yes correct!! :) the 1st one will be A

imqwerty (imqwerty):

and if we just have a straight line then it is straight angle it looks like this-|dw:1452187458593:dw|

imqwerty (imqwerty):

okay now we know what those options mean :) now try to figure out the 2nd question

OpenStudy (anonymous):

okay

OpenStudy (anonymous):

so would it be D. Straight

imqwerty (imqwerty):

to be a straight angle that whole thing must look like a straight line. Like i drew in the previous image :) try again

OpenStudy (anonymous):

so then it would be B. Right because its on the right

imqwerty (imqwerty):

well no its not right angle to be a right angle must exactly look like i drew in the right angle definition okay i'll help on this one :) it will be obtuse angle an obtuse angle is more than 90 degrees and less than 180 degrees[180 degrees is also known as straight angle] obtuse angles look like this-|dw:1452187902908:dw|

OpenStudy (anonymous):

so its C

imqwerty (imqwerty):

yes :) now try to answer question 3

OpenStudy (anonymous):

okay i will try im not really good at math

imqwerty (imqwerty):

its okay you can do ut :)

imqwerty (imqwerty):

*it

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