construct a ∆, angle Q=105°,angle R=30° and ∆PQR=12.5cm?
Answers
Answered by
0
1) Draw a base of 12.5 cm.
2) Draw bisectors of the angles given.Here,you need to draw 105°/2 = 52.5° and 30°/2 =15° from the ends of the segment.
3) Elongate them till they meet at a point. Say, this point is R.
4) Draw perpendicular bisectors for both the sides.
5) Elongate both the perpendicular bisectors till they meet at the base. These are points P and Q.
6) Join P and Q to R.
7) ∆PQR is complete.
Yay! We completed the construction.Recheck it by measuring the angles and the perimeter.
2) Draw bisectors of the angles given.Here,you need to draw 105°/2 = 52.5° and 30°/2 =15° from the ends of the segment.
3) Elongate them till they meet at a point. Say, this point is R.
4) Draw perpendicular bisectors for both the sides.
5) Elongate both the perpendicular bisectors till they meet at the base. These are points P and Q.
6) Join P and Q to R.
7) ∆PQR is complete.
Yay! We completed the construction.Recheck it by measuring the angles and the perimeter.
Answered by
1
1-draw ab=12.5cm
2-at A construct 105°
3-at B construct 30°
4-draw the angle bisector of angle a&b
5-extend the line as ax and by(mark the meeeting point as p)
6-draw the perpendicular bisector of AX and BY
7-mark the point where perpendicular bisectors of AX and BY as q and r
8-join PQR
9- pq+qr+pr=12.5cm
10-pqr is the required triangle
2-at A construct 105°
3-at B construct 30°
4-draw the angle bisector of angle a&b
5-extend the line as ax and by(mark the meeeting point as p)
6-draw the perpendicular bisector of AX and BY
7-mark the point where perpendicular bisectors of AX and BY as q and r
8-join PQR
9- pq+qr+pr=12.5cm
10-pqr is the required triangle
nesthangam:
we dont need to write something as it is from the book
just apply your knowledge and see any way we can do..both r correct
Yeah! U r also correct! But I am saying that the points at which we joinbthe base at A and B not from the point we draw initially
ya i have written correctly only
U didn't understand what I said -_- bye
ya understoo..
Understood ? U r right but where u have marked A & B, they are not originally vertices of that triangle.The vertices are the points where the perpendicular bisectors meet the base. And those points should be A&B
ya thats right u see. the final triangle is pqr not abc.The vertices are the points where the perpendicular bisectors meet the base is q and r..not A and bis a
.not A and B
k? :)
Similar questions