# 11X1 T07 03 angle theorems 2

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• Angle Theorems

• Angle Theorems(5b) Opposite angles of a cyclic quadrilateral are supplementary.

• Angle Theorems(5b) Opposite angles of a cyclic quadrilateral are supplementary.

• Angle Theorems(5b) Opposite angles of a cyclic quadrilateral are supplementary.

• Angle Theorems(5b) Opposite angles of a cyclic quadrilateral are supplementary.

• Angle Theorems(5b) Opposite angles of a cyclic quadrilateral are supplementary.Proof:Join AO and CO

• Angle Theorems(5b) Opposite angles of a cyclic quadrilateral are supplementary.Proof:Join AO and CO

• Angle Theorems(5b) Opposite angles of a cyclic quadrilateral are supplementary.Proof:Join AO and CO

• Angle Theorems(5b) Opposite angles of a cyclic quadrilateral are supplementary.Proof:Join AO and CO

• Angle Theorems(5b) Opposite angles of a cyclic quadrilateral are supplementary.Proof:Join AO and CO

• (5c) The exterior angle of a cyclic quadrilateral is equal to the opposite interior angle.

• (5c) The exterior angle of a cyclic quadrilateral is equal to the opposite interior angle.

• (5c) The exterior angle of a cyclic quadrilateral is equal to the opposite interior angle.

• (6) Angles subtended at the circumference by the same or equal arcs (or chords) are equal.

• (6) Angles subtended at the circumference by the same or equal arcs (or chords) are equal.

• (6) Angles subtended at the circumference by the same or equal arcs (or chords) are equal.

• (6) Angles subtended at the circumference by the same or equal arcs (or chords) are equal.

• (6) Angles subtended at the circumference by the same or equal arcs (or chords) are equal.Proof: Join AO and DO

• (6) Angles subtended at the circumference by the same or equal arcs (or chords) are equal.Proof: Join AO and DO

• (6) Angles subtended at the circumference by the same or equal arcs (or chords) are equal.Proof: Join AO and DO

• (6) Angles subtended at the circumference by the same or equal arcs (or chords) are equal.Proof: Join AO and DO

• (6) Angles subtended at the circumference by the same or equal arcs (or chords) are equal.Proof: Join AO and DOExercise 9C; 1 ace etc, 2 aceg, 3, 4 bd, 6 bdf, 7 bdf, 9, 13, 14