Question
Contruct a ΔABC with BC=6.5cm, AB=5.5 cm, AB=5.5 cm. construct the incircle of the triangle. Mesure and record the radius of the incricle.
✓
Answer
Steps of construction:
1) Draw BC=6.5cm.
2) with B as centre, draw an arc of radius 5.5 cm.
3) with C as centre, draw an arc of radius 5 cm.
Let this arc meets the pervious arc at A.
4) join AB and AC to get ΔABC.
5) Draw the bi sectors of ∠ABC and ∠ACB.
let thses bisectors meet each other at O.
6) Draw ON ⊥ BC.
7) with O as centre and radius ON, draw a incircle that touches all the side of ΔABC,
8) By mesurment, radius ON=1.5 cm
1) Draw BC=6.5cm.
2) with B as centre, draw an arc of radius 5.5 cm.
3) with C as centre, draw an arc of radius 5 cm.
Let this arc meets the pervious arc at A.
4) join AB and AC to get ΔABC.
5) Draw the bi sectors of ∠ABC and ∠ACB.
let thses bisectors meet each other at O.
6) Draw ON ⊥ BC.
7) with O as centre and radius ON, draw a incircle that touches all the side of ΔABC,
8) By mesurment, radius ON=1.5 cm
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