Plane Geometry: And Supplements |
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Page 172
... tangent to the circle . ( b ) A tangent to a circle touches the circle at only one point . The circle is said to be tangent to the line . ( c ) Point A is the point of tangency . X Y A B 188. A straight line that is perpendicular to a ...
... tangent to the circle . ( b ) A tangent to a circle touches the circle at only one point . The circle is said to be tangent to the line . ( c ) Point A is the point of tangency . X Y A B 188. A straight line that is perpendicular to a ...
Page 190
... tangent of two circles is tan- gent to each of them . It may be a common internal tangent like CD or a common external tangent like AB . There are gen- erally two of each kind . ( c ) The length of a common tangent is the length of it ...
... tangent of two circles is tan- gent to each of them . It may be a common internal tangent like CD or a common external tangent like AB . There are gen- erally two of each kind . ( c ) The length of a common tangent is the length of it ...
Page 192
... tangent circles termi- nates in the circles , tangents to the circles at its ends are parallel . ( Prove AC || DE . ) D E B R Suggestion . Draw DBC , the common internal tangent . Using ADBE and ACB , prove A that ∠DEB = ZCAB . C 2 ...
... tangent circles termi- nates in the circles , tangents to the circles at its ends are parallel . ( Prove AC || DE . ) D E B R Suggestion . Draw DBC , the common internal tangent . Using ADBE and ACB , prove A that ∠DEB = ZCAB . C 2 ...
Contents
g The optional units from analytic geometry are included for three | 1 |
LinesAnglesPlanes | 11 |
W W | 24 |
Copyright | |
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Common terms and phrases
ABCD acute angle adjoining figure altitude angle formed angles are equal apothem bisector bisects central angle chord conclusion congruent Construct converse coplanar corresponding sides diagonals diameter dihedral Draw drawn equal circles equidistant equilateral triangle exercises extended exterior angle figure for Ex Find frustum geometry given hypotenuse Hypothesis Informal proof inscribed intersect isosceles trapezoid isosceles triangle kind of angle lateral area length locus of points mean proportional measure meeting mid-point opposite sides parallel parallelogram perimeter perpendicular perpendicular-bisector Plan plane plane geometry Post postulate prism Prove pyramid quadrilateral radii radius ratio rectangle regular polygon rhombus right angle right circular right triangle secant segment similar sphere square Statements straight line Suggestion tangent theorem trapezoid trihedral angle vertex vertical angles Нур