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avatar+20 

 

 

 

I need help with these asap, its very important and if you can help thatd be really great

CandleGrant  Feb 20, 2018
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2+0 Answers

 #1
avatar+86622 
+1

First one

 

Note that the diameter forms the hypotenuse of a right triangle

So   x   is just complementary to the 71° angle =   90  - 71   =   19°

Do you see this???

 

Second one

 

Arc GEC  and  Arc GFC  sum to  360°

So

230  + arc GFC  =  360     subtract   230 from both sides

arc GFC  = 130°

And  since angle GDC is a central angle intercepting this arc, it has the same measure  = 130°

You are correct  !!!

 

Last one

 

WC  and MQ are equal chords....and equal chords in a circle intersect equal arcs

 

So

 

arc CW  is congruent to arc  MQ       the  second answer is correct

 

 

cool cool cool   

CPhill  Feb 20, 2018
edited by CPhill  Feb 20, 2018
 #2
avatar+20 
+1

Thank you so much!!

CandleGrant  Feb 20, 2018

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