Graphic Design & Printing Technology

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Graphic Design & Printing Technology


  • Letthegivenanglebe AOBbetweentwogivenlinesOA andOR

  • With 0 ascentreandwithanyconvenientradius,drawanarccuttingOA
    atCandOBatD.

  • NowwithCandDascentreand atanyconvenientradiusdrawarcsto
    intersecteachotheratP.Drawalinethrough 0 andP,whichbisectsthe
    givenangle AO.


TRIANGLES


ATriangleisaplanefigureboundedbythreestraightlinescontainingthree
angles. The sum of the three interior angles is 180o



  • The sum of all the angles of a triangle is always 180°.

  • The side on which it is supposed to stand is called its base and the angles
    at the base are known as base angles.

  • The point where the other two sides meet is called a vertex and the angle
    at the vertex is called a vertical angle.

  • The line drawn from the vertex and perpendicular to the base is called an
    altitude.

  • The line joining the angular point of a triangle to the middle point of the
    opposite of an angular point is called the Median.


TYPES OF TRIANGLES


i) Equilateral Triangle: It is that in which all the three sides are equal and
the three angles are equal.


ii) Isosceles Triangle: It is that in which two sides as well as the angle oppo-
site to them are equal.


Ill) Scalene Triangle: It has no sides or angle equal. The altitude may either
be within or outside the triangle.


iv) Right angled Triangle: It is that in which one angle is equal to 90° and the
side opposite to the right angle is called hypotenuse.

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