Question

draw triangle ABC with AB =7cm,angle A =67 and half degree, angle B =15 degree without using protractor​

Answer 1

Answer:

I) Construction of triangle

1) Let the base of the triangle be BC=7cm.

2) With taking B as the centre, draw ∠ABC=60

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with the help of a protractor and draw ray BX.

3) Measure 5cm on your compass and with B as the centre, mark point A at 5cm from B on ray BX.

4) Join points A and C to get △ABC.

II) Construction of perpendicular bisectors

1) Taking B as the centre and radius more than half of BC, mark arcs below and above the line.

2) Now, with A as the centre and same radius, draw arcs above and below the line to intersect the already drawn arcs. Name the new points as P and Q.

3) Join points P and Q. This line PQ is the required perpendicular bisector of side BC.

4) Similarly, draw perpendicular bisectors of sides AB and AC.