Understanding Quadrilaterals Class 8 Extra Questions - Examsegg Mathematics

# Bisecting Angles

We at ask-math believe that educational material should be free for everyone. Please use the content of this website for in-depth understanding of the concepts. Additionally, we have created and posted videos on our youtube.

We also offer One to One / Group Tutoring sessions / Homework help for Mathematics from Grade 4th to 12th for algebra, geometry, trigonometry, pre-calculus, and calculus for US, UK, Europe, South east Asia and UAE students.

Affiliations with Schools & Educational institutions are also welcome.

Please reach out to us on [email protected] / Whatsapp +919998367796 / Skype id: anitagovilkar.abhijit

We will be happy to post videos as per your requirements also. Do write to us.

Construction of Bisecting Angles
Using a protractor draw are angle of measure 800.Bisect the given angle.

Step 1: Draw a ray OA.

Step 2:With the help of protractor draw an angle AOB of measure 800
Step 3: With center O and a convenient radius draw an arc cutting arms OA and OB at P and Q respectively.

Step 4: With center P and radius more than half-length of PQ, draw an arc.

Step 5: With center Q and same radius as in the step 4, draw another arc intersecting the arc drawn in the step 4 at R.

Step 6: Join OR and Produce it to form a ray OX the angle AOX is the angle of measure 400 ( one half of 800)

Construction of Angles 600,1200and 1800

Step 1 : Draw a line segment AB of any length.

Step 2 : Draw an arc of any radius with center A, which cuts AB at P.

Step 3 : With same radius and center at P draw another arc, which cuts earlier arc at Q.

Step 4 : Join AQ.

Step 5 : ∠BAD = 600

Step 4 : With same radius and centre at Q draw another arc which cut the first arc at R.

Step 5 : Join A and R by drawing AC.

Step 6 : ∠CAB is the required 120° angle.

 Bisectors of angles Angles 00 and 600 300 600 and 1200 900 00 and 900 450 600 and 900 750 900 and 1200 1050 1200 and 1800 1500

Geometrical Constructions

Basic Geometric Constructions
Construction of Line Segment
Bisecting a Line Segment
Constructing Angles
Bisecting Angles
Constructing Parallel Lines
Construction of Triangle (SSS)
SAS Triangle Construction
ASA Triangle Construction
HL Triangle Construction (Rhs -construction)