Lista de exercícios do ensino médio para impressão
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Knowing that O is the center of the circle, find x in the following cases:
a)

circle with the center O and two intersecting lines in O
b)
circle with center O and a tangent and a diameter drawn

 



answer: a) 125° b) 145°
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Given four distinct points A, B, C and D in a straight line, how many rays whose endpoints are A, B, C or D are there in this line?

 



answer: 8 rays
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The length of the two parallel sides of a right trapezoid are 6 cm and 8 cm, respectively top and bottom bases, and the altitude is 4 cm. The distance between the intersection of the two straight lines that contain the non-parallel legs and the midpoint of the major base is:
a)
$\,5\sqrt{15}\,$ cm
b)
$\,2\sqrt{19}\,$ cm
c)
$\,3\sqrt{21}\,$ cm
d)
$\,4\sqrt{17}\,$ cm
e)
none of these
 
 

 



answer: (D)
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Other math tests:
circle
circumference