Using the diagram shown, select all that apply to the pair of angles, 1 and 2.
https://clackamasweb.owschools.com/media/g_ima01_2014/3/rtad.gif
acute
right
obtuse
adjacent
vertical
complementary
supplementary
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OpenStudy (anonymous):
(there can be more then one)
OpenStudy (rational):
little square box means 90 degrees
OpenStudy (rational):
when an angle is 90 degrees, we call it a "right angle"
OpenStudy (rational):
in light of above information, what can you say about angle 1 ?
OpenStudy (anonymous):
that its a right angle
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OpenStudy (rational):
Yes, what about angle 2, is that right too?
OpenStudy (anonymous):
yep
OpenStudy (rational):
why
OpenStudy (anonymous):
i think its adjacent too, right?
OpenStudy (rational):
you're correct
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OpenStudy (anonymous):
what do you mean why?
OpenStudy (rational):
why do you think angle2 is right
OpenStudy (anonymous):
well because it looks like its a right angle...
OpenStudy (anonymous):
so it isnt?
OpenStudy (rational):
thats one phrase you should avoid in geometry
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OpenStudy (rational):
"it looks like"
never use it
OpenStudy (anonymous):
oh ok
OpenStudy (anonymous):
so it is or not?
OpenStudy (rational):
do you want to know the answer
or want to understand how to figure out the answer
OpenStudy (anonymous):
both
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OpenStudy (rational):
then tell me why do you think angle1 is right
OpenStudy (anonymous):
well because the square is 90*
OpenStudy (rational):
yes, but what has it anything to do with angle1 ?
OpenStudy (anonymous):
ok i got it.. its 90 because 90 +90 = 180
OpenStudy (rational):
Exactly!
we call them "supplementary angles" when two angles add up to 180
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OpenStudy (anonymous):
so thats it?
OpenStudy (rational):
what do you think
OpenStudy (anonymous):
i think yes.. just making sure..
OpenStudy (rational):
can you summarize what options you selected and why
OpenStudy (anonymous):
right
adjacent
supplementary
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