Question

Draw a traingle A B C with A B = 6cm.
BC=7cm and CA=8cm. Using ruler and
Compass alone draw (1) the bisector AD
of angle A and ② perpendicular AL from
A on Bc measure angle AD​

Answer 1

Answer:

sum of three angles of a triangle is 180 degree.

Answer 2

Answer:

steps of construction :

1. draw a line segment BC of 7 cm.

2. with center B, draw an arc of radius 6 cm.

3. with center C draw an arc of radius 8 cm intersecting the previously draw arc at A.

4. join AC and BC to get the required triangle.

Angel bisector steps :

5. from A , cuts arcs of equal radius intersecting AB and AC at E and F respectively.

6. from E and F, cut arcs of equal radius intersecting at point H.

7. join AH and extend to produce the angle bisector of a angle A, meeting line BC at D.

8. perpendicular from point A to line BC

steps:

9. from A cut arcs of equal radius intersecting BC at P and Q , respectively ( Extend BC to draw these arcs).

10. from P and Q, cut arcs of equal radius intersecting at M.

11. join AM cutting BC at L.

12. AL is the perpendicular to the line BC.