Answer:
128 deg
Step-by-step explanation:
The sum of the measures of the angles of a polygon of n sides is
(n - 2)180
A trapezium has 4 sides, so the sum of the measures of the angles is
(4 - 2)180 = 2(180) = 360
<em>m<CBE + m<C + m<D + m<DEB = 360</em>
Angles ABC and CBE are a linear pair so the sum of their measures is 180 deg.
m<ABC + m<CBE = 180
115 + m<CBE = 180
m<CBE = 65
m<C = x
m<D = 90
Angles DEB and DEF are a linear pair so the sum of their measures is 180 deg.
m<DEB + m<DEF = 180
m<DEB + m<103 = 180
m<DEB = 77
<em>m<CBE + m<C + m<D + m<DEB = 360</em>
65 + x + 90 + 77 = 360
x + 232 = 360
x = 128
Answer: 128 deg
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Here is how to work 2, 3 , and 4.
Hello :
<span>(x - 3)² + y² = 7²
the center is : A(3 , 0 ) and radius r = 7
the </span> point D is on the interior if : AD <span>< 7
</span>the point D is on the exterior if : AD > 7
the point D is circumference of the circle if :AD = 7
Answer:
-6.5)7 1/4)6.57)-5 58/100)9 1/3
Step-by-step explanation:
I have no explanation
