Question

Theorem for circles. ​

Answer 1

Answer:

First circle theorem - angles at the centre and at the circumference. Second circle theorem - angle in a semicircle. Third circle theorem - angles in the same segment. Fourth circle theorem - angles in a cyclic quadlateral.

Answer 2

Answer:

Theorem 1. Equal chords subtend equal angles at the center.

Theorem 2. If an angle subtended on the arc us equal , then it's chords are equal.

Theorem 3. Angle in semi circle is 90°

Step-by-step explanation:

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