What Is Geometry? Benefits of Studying Geometry
What is Geometry?Geometry comes from the Ancient Greek “?????????”, which means geo- “earth”, and -metron “measurement”. It is a part of mathematics that deals with questions of shape, size, the relative position of figures, and the properties of spaceLINEThe line is a straight curve. Lines are used to representing direct objects.
It has negligible width and height. It can be defined in many ways. The line can be infinite and straight. A line is a collection of continuous points I should be extended indefinitely in either of its direction. The line entirely differs from the Line segmentA line segment is a part of a line. It should be bounded by two distinct end points and contains every point on the line between two endpoints. A line segment is defined as the finite length of two endpoints.
These line segments may have some of the same relationships as lines, such as being parallel, intersecting, or skew.
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[source: wikipedia]Kinds of Lines in GeometryDifferent kinds of line in geometry:Parallel Line- Parallel line means nothing but If Two lines are both in the same plane, It should never intersect one another that is called parallel lines. Parallel lines remain the same distance apart at all times. Ia should be denoted the symbol of ( || )Perpendicular Line-Perpendicular line means two lines it should intersect and form right angles are called perpendicular lines. A perpendicular line is denoted by the symbol of (?)Intersect Line- Intersect line mean If two or more lines that meet at a point are called intersecting lines. Each line should be meet at one central point. That point would be on each of these linesOther kinds of line in geometry:These three lines are major kinds of line in geometry.
Lines are also classified as in different forms.Those areVertical line- vertical lines that are at the right angle or perpendicular to a planeHorizontal line- horizontal lines that are parallel to the horizon.Angular line- angular lines that have sharp edges. They can be long or short.Curve line- curve lines that are without anglesDiagonal line- diagonal lines that suggest action or movementJagged line- jagged lines that are harsh and unpleasant.ANGLEAngle is the figure formed by two rays or line segments, called the sides of the angle, which shares a common endpoint called the vertex of the angle.Types of AnglesAcute angle- an angle whose measure is less than 90ºRight angle- an angle whose measure is 90ºObtuse angle- an angle whose measure is greater than 90º but less than 180ºStraight angle- an angle whose measure is 180ºReflex angle- is an angle that is not 90º, not a right angleOblique angle- any angle that is not 90º, not a right angleDihedral angle- an angle between two planes