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Page 31
... angles are equal . ( § 15 ( c ) . ) Post . 9. * A straight angle equals two right angles . ( § 16 ( b ) . ) Post . 10. * All straight angles are equal . ( § 16 ( c ) . ) Post . 11. A circle can be drawn from any point as center with any ...
... angles are equal . ( § 15 ( c ) . ) Post . 9. * A straight angle equals two right angles . ( § 16 ( b ) . ) Post . 10. * All straight angles are equal . ( § 16 ( c ) . ) Post . 11. A circle can be drawn from any point as center with any ...
Page 85
... angles , the angles are equal . The converse of this theorem is : If two angles are equal , the angles are right angles . Clearly this second theorem is not true . What is the converse of each of the following statements ? Is the ...
... angles , the angles are equal . The converse of this theorem is : If two angles are equal , the angles are right angles . Clearly this second theorem is not true . What is the converse of each of the following statements ? Is the ...
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 ...
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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