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Quadrilateral (also: tetragon, quadrangle) definition - Math Open ...
QuadrilateralAlso tetragon, quadrangle ... By special arrangement, Math Open Reference users can get 20 minutes of free personal online help in math and ...
2.
Quadratic curve and graph display - Math Open Reference
Assuming you already have a knowledge of quadratic equations, the following activities can help you get a more intuitive feel for the action of the three ...
3.
Constructing a parallel through a point with compass and ...
Constructing a line parallel to a given line through a given point with compass and ... Click here for a printable parallel line construction worksheet ...
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Reflex Angle definition - Math Open Reference
Definition of a reflex angle (one whose measure is greater than 180 degrees but less than 360 degrees).
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Math / scientific calculator similar to those from TI, Casio, HP ...
A math / scientific calculator. ... divide, add, subtract or exponent, it assumes you want to work on the the result from the previous line. ...
6.
Obtuse Angle definition - Math Open Reference
Definition of an obtuse angle. An angle between (but not including) 90deg and 180 deg ... Acute angle. Less than 90°, Right angle. Exactly 90°, Obtuse angle ...
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Ellipse definition and properties- Math Open Reference
Definition and properties of an ellipse. ... Also drag the point on the ellipse and observe that the sum of the lengths of the lines that meet there is ...
8.
Math / scientific calculator similar to those from TI, Casio, HP ...
A math / scientific calculator. ... Find the value of the equation: by pressing the calculator buttons: √, 3, x2, +, 4, x2, ), = The display will show: ...
9.
Major / minor axis of an ellipse - Math Open Reference
Definition and properties of the major and minor axes of an ellipse, with formulae to calculate their length.
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Parallelogram definition - Math Open Reference
A rectangle is a parallelogram but with all angles fixed at 90°; A rhombus is a parallelogram but with all sides equal in length ...