Plane Geometry |
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Page 128
... angle of a circle is an angle whose vertex is at the center of the circle and whose sides are radii of the circle , as COA ? ZCOA cuts arc AC from the circle . Arc AC is the arc of ... CENTRAL ANGLES AND ARCS 160. In the same circle.
... angle of a circle is an angle whose vertex is at the center of the circle and whose sides are radii of the circle , as COA ? ZCOA cuts arc AC from the circle . Arc AC is the arc of ... CENTRAL ANGLES AND ARCS 160. In the same circle.
Page 129
Walter Wilson Hart. EQUAL CENTRAL ANGLES AND ARCS 160. In the same circle or equal circles : ( a ) If central angles are equal , their arcs are equal . ( b ) If arcs are equal , their central angles are equal . Α B 129 Informal proofs ...
Walter Wilson Hart. EQUAL CENTRAL ANGLES AND ARCS 160. In the same circle or equal circles : ( a ) If central angles are equal , their arcs are equal . ( b ) If arcs are equal , their central angles are equal . Α B 129 Informal proofs ...
Page 145
... angles and arcs . measuring angles is an angle - degree . The common unit for ( See § 17 , p . 19. ) If radii are drawn from center O of the circle so that 360 consecutive equal central angles are formed , then each of these angles is 1 ...
... angles and arcs . measuring angles is an angle - degree . The common unit for ( See § 17 , p . 19. ) If radii are drawn from center O of the circle so that 360 consecutive equal central angles are formed , then each of these angles is 1 ...
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Common terms and phrases
AABC ABCD ADDITIONAL EXERCISES ADEF adjoining figure altitude angle formed angles are equal apothem ARST AXYZ base angles bisector bisects central angle chord circumscribed conclusion corresponding sides cuts diagonals diameter Draw drawn equal angles equal circles equal sides equidistant equilateral triangle EXERCISES FOR CHAPTER extended exterior angle figure for Ex Find the area geometry hypotenuse Hypothesis inscribed inscribed angle intersect isosceles trapezoid isosceles triangle Locate locus of points mean proportional measure median meeting AC mid-point opposite sides parallelogram perimeter perpendicular perpendicular-bisector Plan plane Proof Prove pupil quadrilateral radii radius ratio rectangle regular hexagon regular polygon rhombus right angle right triangle secant similar triangles square STATEMENTS REASONS straight line Suggestion tangent theorem vertex angle vertices XYZW ZAOB