Reference Book
- JoinQand6.DrawlinesparalleltoQ6throughthedivisionpointsl, 2, 3,
4 and 5 cutting - PQatI’, 2’, 3’, 4’,and 5'.
- Pointsl’, 2’, 3’, 4’and5'arethedivisionpointsdividingPQintoequal
parts.
ANGLES
Anangleistheinclinationbetweentwointersectinglines.
Types of Angles
Rightangle:Angleequalto 90 °iscalledrightangle.
Acuteangle:Anglelessthan 90 °is called acuteangle.
Obtuse angle: Anglegreaterthan90°iscalledobtuseangle.
Complementaryangle:
Complementaryanglearethoseangles whichtogetherform90°,theangles
AOCandBOCarecomplementaryangles. Theangle AOCisalsosaidtobe
thecomplementangleof BOCandvice-versa.
Supplementaryangles:supplementaryanglesarethosewhentwoangles
togethermake180°.
Bisectingagivenanglebetweentwogivenlines