Elements of Plane GeometryAmerican Book Company, 1901 - 247 σελίδες |
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Αποτελέσματα 1 - 5 από τα 100.
Σελίδα 13
... drawn joining two points . [ It follows from this axiom that two straight lines can intersect in only one point . ] 14. The shortest distance from one point to another is meas- ured on the straight line joining them . 15. Through a ...
... drawn joining two points . [ It follows from this axiom that two straight lines can intersect in only one point . ] 14. The shortest distance from one point to another is meas- ured on the straight line joining them . 15. Through a ...
Σελίδα 20
... of B. C is n yards west of A , and D is n yards east of B. Prove that the distance from B to C is the same as the distance from A to D. PROPOSITION IV . THEOREM 47. If a perpendicular is drawn 20 PLANE GEOMETRY diameter of,
... of B. C is n yards west of A , and D is n yards east of B. Prove that the distance from B to C is the same as the distance from A to D. PROPOSITION IV . THEOREM 47. If a perpendicular is drawn 20 PLANE GEOMETRY diameter of,
Σελίδα 21
Alan Sanders. PROPOSITION IV . THEOREM 47. If a perpendicular is drawn to a line at its middle point , I. Any point ... Draw PA and PB . = PB , for PA and PB measure the [ It is required to prove PA distance from P to A and B respectively ...
Alan Sanders. PROPOSITION IV . THEOREM 47. If a perpendicular is drawn to a line at its middle point , I. Any point ... Draw PA and PB . = PB , for PA and PB measure the [ It is required to prove PA distance from P to A and B respectively ...
Σελίδα 23
... drawn to CD at its middle point . By § 48 both m and n must be on this perpendicular . By hypothesis both m and n are on AB . m n So the perpendicular and AB both pass through m and n . By Axiom 13 only one straight line can pass ...
... drawn to CD at its middle point . By § 48 both m and n must be on this perpendicular . By hypothesis both m and n are on AB . m n So the perpendicular and AB both pass through m and n . By Axiom 13 only one straight line can pass ...
Σελίδα 27
... drawn outside of the angle . What is the sum of the two acute angles formed ? [ ≤1 + 22 = ? ] 1 2 D B E 71. EXERCISE . Find the supplement of the complement of also the complement of the supplement of 14 R.A. R.A. , 72. DEFINITION ...
... drawn outside of the angle . What is the sum of the two acute angles formed ? [ ≤1 + 22 = ? ] 1 2 D B E 71. EXERCISE . Find the supplement of the complement of also the complement of the supplement of 14 R.A. R.A. , 72. DEFINITION ...
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Συχνά εμφανιζόμενοι όροι και φράσεις
AABC AB² ABC and DEF AC² adjacent angles altitudes angle formed angles equal apothem arc ABC arcs intercepted BC² bisector chord circles are tangent circum circumference Construct a triangle COROLLARY DEFINITION Describe a circle diagonals diameter divided EFGH equal circles equally distant equiangular polygon equilateral triangle EXERCISE exterior angles figure given angle given circle given line given point homologous homologous sides hypotenuse inscribed angle isosceles triangle joining the middle Let ABC Let To Prove line joining mean proportional medians meet middle points mutually equiangular opposite sides parallelogram passes perimeter perpendicular point of intersection prolonged PROPOSITION Prove ABCD Prove Proof quadrilateral ratio rectangle regular inscribed regular polygon rhombus right angles right-angled triangle SCHOLIUM secants segments Show similar polygons similar triangles straight line tangent THEOREM trapezoid triangle ABC unequal vertex vertical angle Whence ΔΑΒΟ ᎠᏴ
Δημοφιλή αποσπάσματα
Σελίδα 68 - The straight line joining the middle points of two sides of a triangle is parallel to the third side, and equal to half of it.
Σελίδα 163 - If two chords intersect within a circle, the product of the segments of one is equal to the product of the segments of the other.
Σελίδα 129 - To express that the ratio of A to B is equal to the ratio of C to D, we write the quantities thus : A : B : : C : D ; and read, A is to B as C to D.
Σελίδα 120 - If a quadrilateral is circumscribed about a circle, the sum of one pair of opposite sides is equal to the sum of the other pair.
Σελίδα 72 - The lines joining the middle points of the opposite sides of a quadrilateral bisect each other.
Σελίδα 203 - In any obtuse triangle, the square of the side opposite the obtuse angle is equal to the sum of the squares of the other two sides, increased by twice the product of one of these sides and the projection of the other side upon it.
Σελίδα 15 - If two triangles have two sides and the included angle of one equal respectively to two sides and the included angle of the other, the triangles are equal.
Σελίδα 221 - Tangents to a circle at the middle points of the arcs subtended by the sides of a regular inscribed polygon...
Σελίδα 11 - PERIPHERY of a circle is its entire bounding line ; or it is a curved line, all points of which are equally distant from a point within called the center.
Σελίδα 61 - If the diagonals of a quadrilateral bisect each other, the figure is a parallelogram.