Can someone please help me, im stuck.

Mathematics

2 answers:

____ [38]3 years ago

3 0

Answer:

I believe the answer would be 47

Step-by-step explanation:

because the angles of a triangle should add up to 180°

Rainbow [258]3 years ago

3 0

Answer: x =47

Step-by-step explanation:

Let`s find 1:

y= 1 angle

In a triangle the sum of the angles is 180 º, so you sum

66+21+y = 180

y= 180 - 66 - 21

y= 180-87

y= 93

Let`s find x:

the angle that is not written in the triangle where x is, is opposite by vertex to angle 1 or y, that is, they have the same value, so:

x + 40 + 93 = 180

x = 180 - 133

x = 47

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IN ΔBCD line N is the perpendicular bisector of BC and line M is the perpendicular bisector of CD

Helga [31]

Answer:

Correct answer is D(the intersection of lines N and M)

Step-by-step explanation:

we Know that circumcenter of a triangle is point at which the perpendicular bisectors of the sides of a triangle intersect and which is equidistant from the three vertices. In other words circumcenter of a triangle is the center of the circle which passes through the vertices of the triangle. It means, any side of the triangle will act as a chord of the circumcircle. Hence the circumcenter of a triangle must lie on the perpendicular bisectors of the sides. therefore the intersection of line N and M must be circumcenter of the triangle.

I hope this answer will help you

4 0

3 years ago

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fredd [130]

Answer:

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