The elements of plane geometry, Τόμος 1 |
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Αποτελέσματα 1 - 5 από τα 35.
Σελίδα 30
... produced , the exterior angle is greater than either of the interior opposite angles . Let ABC be a triangle having the side BC produced to D : E 4 F then shall the exterior angle ACD be greater than either of the interior opposite ...
... produced , the exterior angle is greater than either of the interior opposite angles . Let ABC be a triangle having the side BC produced to D : E 4 F then shall the exterior angle ACD be greater than either of the interior opposite ...
Σελίδα 31
... produced . Again , produce AC to G , then , in like manner , the angle BCG is greater than the angle ABC which is opposite to AC , but the angle BCG is equal to the angle ACD , because they are vertically opposite ; I. 4 . therefore the ...
... produced . Again , produce AC to G , then , in like manner , the angle BCG is greater than the angle ABC which is opposite to AC , but the angle BCG is equal to the angle ACD , because they are vertically opposite ; I. 4 . therefore the ...
Σελίδα 32
... Produce BC to D. Because ACD is an exterior angle of the triangle ABC , therefore it is greater than the interior opposite angle ABC , I. 9 . to each add the angle ACB , then the angles ACD , ACB are together greater than the angles ABC ...
... Produce BC to D. Because ACD is an exterior angle of the triangle ABC , therefore it is greater than the interior opposite angle ABC , I. 9 . to each add the angle ACB , then the angles ACD , ACB are together greater than the angles ABC ...
Σελίδα 35
... Produce BA to D , make AD equal to AC , and join CD . Because AD is equal to AC , therefore the angle ACD is equal to the angle ADC ; I. 7 . Ax . a . but the angle BCD is greater than the angle ACD , therefore the angle BCD is also ...
... Produce BA to D , make AD equal to AC , and join CD . Because AD is equal to AC , therefore the angle ACD is equal to the angle ADC ; I. 7 . Ax . a . but the angle BCD is greater than the angle ACD , therefore the angle BCD is also ...
Σελίδα 36
... Produce BD to meet AC at E. Then BA and AE are together greater than BE , to each of these add EC , 1. 13 . then BA and AC are together greater than BE and EC ; Ax . f . again , DE and EC are together greater than DC 36 THE ELEMENTS OF ...
... Produce BD to meet AC at E. Then BA and AE are together greater than BE , to each of these add EC , 1. 13 . then BA and AC are together greater than BE and EC ; Ax . f . again , DE and EC are together greater than DC 36 THE ELEMENTS OF ...
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Συχνά εμφανιζόμενοι όροι και φράσεις
AB is equal ABCD AC is equal adjacent angles adjoining sides alternate angle angle ABC angle ACB angle AFG angle BAC angle CAB angle DEF angle EDF angle FGD angles are equal angles equal BA and AC base BC bisector bisects centre circle cutting Constr construct a triangle contrapositive diagonal distance draw a circle equal angles equal to AC equal to CD exterior angle find the locus Geometry given angle given point given straight line greater Hence hypotenuse identically equal interior opposite angle isosceles triangle less Let ABC meet middle point obtuse angle opposite sides parallel straight lines parallelogram perpendicular point equidistant Prob produced quadrilateral rectangle contained rectangle whose base right angles right-angled triangle shew side AB side AC sides equal square on AC squares on AB straight line drawn Theorem trapezium triangle ABC triangles are identically twice the rectangle vertex
Δημοφιλή αποσπάσματα
Σελίδα 27 - If two triangles have two angles of the one equal to two angles of the other, each to each, and one side equal to one side, viz. either the sides adjacent to the equal...
Σελίδα 98 - A circle is a plane figure contained by one line, which is called the circumference, and is such that all straight lines drawn from a certain point within the figure to the circumference, are equal to one another.
Σελίδα 56 - ... is equal to twice as many right angles as the polygon
Σελίδα 35 - Any two sides of a triangle are together greater than the third side.
Σελίδα 26 - The straight lines drawn from the extremities of the base of an isosceles triangle to the middle points of the opposite sides are equal to one another.
Σελίδα 37 - Of all the straight lines that can be drawn to a given straight line from a given point outside it, the perpendicular is the shortest.
Σελίδα 70 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.
Σελίδα 110 - Iff a straight line be divided into any two parts, four times the rectangle contained by the whole line, and one of the parts, together with the square of the other part, is equal to the square of the straight line which is made up of the whole and that part.
Σελίδα 31 - Any two angles of a triangle are together less than two right angles.
Σελίδα 115 - In a right.angled triangle, the square on the hypotenuse is equal to the sum of the squares on the sides containing the right angle . . . . 130 Applications of Pythagoras' theorem . . . . 132 THEOREM 6.