Find the measure of arc DBC in circle P.

122°

Step-by-step explanation:

The measure of arc DBC in circle P is calculated thus:

DBC = 180° - 58° (sum of angles on a straight line)

DBC = 122°

Therefore, the measure of arc DBC in circle P is 122°.

Note,

Line BD is a straight line; thus, sum of angles on a straight line is 180°.

Angle BPC is 58°. To determine angle DPC, we subtract 58° from 180°, such that, 180° - 58° = 122°.

proofs involving isosceles triangles often require special consideration because an isosceles triangle has several distinct properties that do not apply to normal triangles.(more about triangle types) therefore, when you are trying to prove that two triangles are congruent, and one or both triangles, are isosceles you have a few theorems that you can use to make your life easier.

step-by-step explanation:

an isosceles triangle has two congruent sides and two congruent angles. the congruent angles are called the base angles and the other angle is known as the vertex angle. ∠bac and ∠bca are the base angles of the triangle picture on the left. the vertex angle is ∠abc

step-by-step explanation:

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about the problem:

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