(FUVEST - 1977) Given that:
;
;
;

The length of é is:

a) b)
c) d)
e)

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In the picture below, ABFG and BCDE are squares and their each one sides measures, respectively, a and b. Knowing that and the perimeter of the triangle ACG is 12, we can assure that a e b are both inside the interval:

a) ]1; 5[b) ]0; 4[c) ]2; 6[
d) ]3; 7[e) ]4; 8[

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In the given picture, if r // s , we can say that the value of is:

a) 90°
b) 100°
c) 110°
d) 120°
e) 22°40'

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Given the following picture, find the value of :
show the answer

 

Knowing that in the picture r // s, the value of is:

a) 90°
b) 100°
c) 110°
d) 120°
e)