Plane GeometryMacmillan, 1901 |
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Αποτελέσματα 1 - 5 από τα 74.
Σελίδα 6
... a straight angle is it ? 8. What angle is formed by the hands of a clock at one o'clock ? at 2:30 ? at 2:45 ? 9. How many ... point , forming equal angles , find one angle ( a ) in degrees , ( b ) in right angles , and ( c ) in straight ...
... a straight angle is it ? 8. What angle is formed by the hands of a clock at one o'clock ? at 2:30 ? at 2:45 ? 9. How many ... point , forming equal angles , find one angle ( a ) in degrees , ( b ) in right angles , and ( c ) in straight ...
Σελίδα 7
... A -B C 0 3 6 5 FIG . 19 . FIG . 20 . 23. What relation exists between AOD and BOC in the preceding exercise ? 24. What angle is formed by the bisectors of a pair of adjacent sup- plementary angles ? 25. Three lines meet in a point , O ...
... A -B C 0 3 6 5 FIG . 19 . FIG . 20 . 23. What relation exists between AOD and BOC in the preceding exercise ? 24. What angle is formed by the bisectors of a pair of adjacent sup- plementary angles ? 25. Three lines meet in a point , O ...
Σελίδα 9
... point in a given line there can be but one perpendicular to the line . ( 53 ) D 55. The complements of the same or ... point in a plane is equal to two straight angles . A- A- B -E B K H * A figure formed by straight lines only is called ...
... point in a given line there can be but one perpendicular to the line . ( 53 ) D 55. The complements of the same or ... point in a plane is equal to two straight angles . A- A- B -E B K H * A figure formed by straight lines only is called ...
Σελίδα 10
... a supplement of 23 , 2 is a supplement of 23 , ( two adjacent angles whose exterior sides are in a straight line ... point , O , prove LAOE - LFOD = LAOC . Ex . 29. In the same diagram , prove ... A polygon is a portion of a 10 PLANE GEOMETRY.
... a supplement of 23 , 2 is a supplement of 23 , ( two adjacent angles whose exterior sides are in a straight line ... point , O , prove LAOE - LFOD = LAOC . Ex . 29. In the same diagram , prove ... A polygon is a portion of a 10 PLANE GEOMETRY.
Σελίδα 13
... A'C ' , ( ZA ZA ' by hyp . ) . C will fall upon A'C ' or its prolongation . .. the point C falling upon both the lines B'C ' and A'C " , must fall upon the point common to both lines , namely , C " . .. AABC and A'B'C ' coincide .. AABC = A ...
... A'C ' , ( ZA ZA ' by hyp . ) . C will fall upon A'C ' or its prolongation . .. the point C falling upon both the lines B'C ' and A'C " , must fall upon the point common to both lines , namely , C " . .. AABC and A'B'C ' coincide .. AABC = A ...
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
AABC ABCD adjacent angles algebraic altitude angle equal angle formed angles are equal apothem base angle bisect bisector central angle circumference construct a triangle decagon diagonals diagram for Prop diameter draw drawn equiangular equiangular polygon equilateral triangle equivalent exterior angle find a point Find the area given circle given line given point given triangle HINT homologous sides hypotenuse inscribed isosceles triangle joining the midpoints line joining mean proportional measured by arc median opposite sides parallel lines parallelogram perimeter perpendicular perpendicular-bisector point equidistant produced proof is left PROPOSITION prove Proof proving the equality quadrilateral radii rectangle regular hexagon regular polygon rhombus right angle right triangle SCHOLIUM School secant segments side equal similar polygons similar triangles straight angle straight line tangent THEOREM third side transversal trapezoid triangle ABC triangle are equal vertex vertical angle
Δημοφιλή αποσπάσματα
Σελίδα 148 - 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 180 - The areas of two triangles which have an angle of the one equal to an angle of the other are to each other as the products of the sides including the equal angles. B' ADC A' D' C' Hyp. In triangles ABC and A'B'C', ZA = ZA'.
Σελίδα 45 - If two triangles have two sides of one equal respectively to two sides of the other, but the included angle of the first triangle greater than the included angle of the second, then the third side of the first is greater than the third side of the second.
Σελίδα 31 - The median to the base of an isosceles triangle is perpendicular to the base.
Σελίδα 209 - The area of a regular polygon is equal to onehalf the product of its apothem and perimeter.
Σελίδα 130 - If a line divides two sides of a triangle proportionally, it is parallel to the third side.
Σελίδα 71 - The midpoints of two opposite sides of a quadrilateral and the midpoints of the diagonals determine the vertices of a parallelogram. * Ex.
Σελίδα 26 - If one angle of a triangle is equal to the sum of the other two, the triangle can be divided into two isosceles triangles.
Σελίδα 190 - The areas of two similar triangles are to each other as the squares of any two homologous sides.
Σελίδα 56 - A line which joins the midpoints of two sides of a triangle is parallel to the third side and equal to half of it.