High School

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The diagram shows a circle, centre

O

.

Points

A

,

B

,

C

and

D

lie on the circumference of the circle.

E

D

F

is a tangent to the circle.

Angle

A

B

C

=

82

∘

and angle

O

D

C

=

57

∘

.

The diagram shows a circle centre O Points A B C and D lie on the circumference of the circle E D F is a

Answer :

The value of x as shown in the circle with center O is 66°

Circle

Circle is the locus of a point such that all points on the plane is equidistant from a fixed point known as the center.

Using the image attached:

Triangle ODC is an isosceles triangle because OC = OD (radius), hence:

∠ODC = ∠OCD = 57° (isosceles triangle)

∠OCD + ∠ODC + ∠DOC = 180° (sum of angles in a triangle)

57 + 57 + x = 180

x = 66°

The value of x as shown in the circle with center O is 66°

Find out more on Circle at: https://brainly.com/question/22965557

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Rewritten by : Barada

Final answer:

The question refers to the geometric properties of circles, asking to use given measures of angles and the tangent line to potentially calculate unknown angles or lengths of line segments.

Explanation:

The subject of this question is related to the geometric properties of circles. Here, you are provided with a diagram of a circle with point O as the center, with several points - A, B, C, and D - lying on the circumference. There is a line segment EDF that forms a tangent to the circle. You're also given the measure of two angles - Angle ABC equals 82°, and angle ODC equals 57°.

To answer a question like this, one should typically start by understanding the various angle properties related to circles. For instance, the tangent line forms a 90 degree angle with the radius at the point of tangency, and the angles in a triangle sum to 180 degrees. Given the information provided, one might be asked to calculate unknown angles or perhaps the lengths of certain line segments.

Learn more about Circle Geometry here:

https://brainly.com/question/27802544

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