Math - Circle Theorem

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8 Terms

1
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<p>Angles formed by the diameter and the circumference of the circle = how many degrees?</p>

Angles formed by the diameter and the circumference of the circle = how many degrees?

90

<p>90</p>
2
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<p>Angles in the same _______ of a circle are equal if they are formed by the same _____</p>

Angles in the same _______ of a circle are equal if they are formed by the same _____

segment, chord

<p>segment, chord</p>
3
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<p>The angle at the ______ is twice the angle at the ____________ .</p>

The angle at the ______ is twice the angle at the ____________ .

centre, circumference

<p>centre, circumference</p><p></p>
4
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<p>Opposite angles in a cyclic quad are ____________.</p>

Opposite angles in a cyclic quad are ____________.

supplementary

<p>supplementary</p>
5
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<p>If one length of a cyclic quad is extended the ________ angle formed is equal to the _______ ________ angle.</p>

If one length of a cyclic quad is extended the ________ angle formed is equal to the _______ ________ angle.

exterior, interior opposite angle

<p>exterior, interior opposite angle</p>
6
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<p>The tangent to a circle is _____________ to the radius</p>

The tangent to a circle is _____________ to the radius

perpendicular

<p>perpendicular</p>
7
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<p><span><span>The angle between a tangent and a chord is equal to the angle in the _________ _______.</span></span></p>

The angle between a tangent and a chord is equal to the angle in the _________ _______.

alternate segment.

<p><strong>alternate segment</strong><span>.</span></p>
8
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<p>________ originating from the same point are equal in lenght</p>

________ originating from the same point are equal in lenght

tangents

<p>tangents</p>