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Circle Geometry and Theorems

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# Circle Geometry and Theorems - PowerPoint PPT Presentation

By Jonathan and Aislinn. Circle Geometry and Theorems. Circle diameter. Task A - diameter. Task a - chord. Circle chord. TASK A - tangent. Circle tangent. This is an isosceles triangle. Because two of the sides are the same and the third one is not. . Task A.

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By Jonathan and Aislinn

### Circle Geometry and Theorems

Task a - chord

Circle chord.

TASK A - tangent

Circle tangent

Task B – angles subtended from the diameter

We noticed that angle D is 90 degrees.

TASK B – ANGLES IN THE SAME SEGMENT

Circle theorem of chords

Angles subtended from the same segment of a chord are always the same.

“ Given a chord all angles from that chord are equal”

Task b – angles in a cyclic quadrilateral

“Opposite angles of a cyclic quadrilateral add up to 180 degrees”