Completar frases Definitions and PostulatesVersión en línea Fill in the blank with the correct word por Javier Florez 1 quadrilateral semicircle containing figures lines point diameter right length surface points lines point rectilinear lines ends straight Rectilinear part line angled line straight Definitions Definition 1 A is that which has no . Definition 2 A is breadthless . Definition 3 The of a line are . Definition 4 A straight is a line which lies evenly with the points on itself . Definition 5 A is that which has length and breadth only . Definition 6 . The edges of a surface are . Definition 7 A plane surface is a surface which lies evenly with the straight on itself . Definition 8 A plane angle is the inclination to one another of two lines in a plane which meet one another and do not lie in a straight line . Definition 9 And when the lines the angle are straight , the angle is called . Definition 10 When a straight line standing on a straight line makes the adjacent angles equal to one another , each of the equal angles is right , and the straight line standing on the other is called a perpendicular to that on which it stands . Definition 11 An obtuse angle is an angle greater than a right angle . Definition 12 An acute angle is an angle less than a right angle . Definition 13 A boundary is that which is an extremity of anything . Definition 14 A figure is that which is contained by any boundary or boundaries . Definition 15 A circle is a plane figure contained by one line such that all the lines falling upon it from one among those lying within the figure equal one another . Definition 16 And the point is called the center of the circle . Definition 17 A of the circle is any straight line drawn through the center and terminated in both directions by the circumference of the circle , and such a straight line also bisects the circle . Definition 18 A is the figure contained by the diameter and the circumference cut off by it . And the center of the semicircle is the same as that of the circle . Definition 19 are those which are contained by straight lines , trilateral figures being those contained by three , quadrilateral those contained by four , and multilateral those contained by more than four straight lines . Definition 20 Of trilateral figures , an equilateral triangle is that which has its three sides equal , an isosceles triangle that which has two of its sides alone equal , and a scalene triangle that which has its three sides unequal . Definition 21 Further , of trilateral figures , a - triangle is that which has a right angle , an obtuse - angled triangle that which has an obtuse angle , and an acute - angled triangle that which has its three angles acute . Definition 22 Of figures , a square is that which is both equilateral and right - angled ; an oblong that which is right - angled but not equilateral ; a rhombus that which is equilateral but not right - angled ; and a rhomboid that which has its opposite sides and angles equal to one another but is neither equilateral nor right - angled . And let quadrilaterals other than these be called trapezia . Definition 23 Parallel are straight lines which , being in the same plane and being produced indefinitely in both directions , do not meet one another in either direction .
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