Question

draw an angle of measure by 130 degree construct bisector

Answer 1

1)120°

2)135°

3)between 120 and 135

4)you will get 130°

Angle bisector

1)between 130 and 0

you will get it.

Answer 2

Given:

• A angle of ∠$130$°.

To find:

• The angular bisector of ∠$130$°.

Step by step explanation:

• Draw a horizontal line $OA$ using ruler.
• With $O$ as a centre draw a semicircular arc of convenient radius.
• Mark a $P$ at a point where the arc cuts the line $OA$.
• With the same radius as a arc cut an arc in the semicircular arc and mark it as $Q$.
• Now with $Q$ as a centre cut another arc with the same radius in the semicircular arc and mark it as $R$.
• Now with $R$ as a centre cut another arc in the semicircular arc and mark it as $S$.
• From the point $R$ draw two arcs.
• From the point $S$ cut the arc drawn from $R$ and mark it as $T$.
• From $T$ cut the another arc drawn from $R$ and mark it a $U$.
• From $T$ draw an arc and cut the arc from $U$.
• Let this point be $V$.
• Join $OV$ which is ∠$140$° and join $OR$ which is ∠$120$°.
• Now bisect the angle ∠$VOR$ which gives ∠$130$°.
• Now join the arc and mark $W$.

        ∠$AOW=130$°

• Now bisect the angle ∠$AOW$ which gives $65$°.

Final answer:

• Thus the angular bisector of angle $130$° is found as $65$° with compass and ruler.