Question

construct a triangle ABC given the base bc =7,base angle B=120^ and sum of other two sides AC+AB=18cm( write the steps of construction briefly)​

Answer 1

Answer:

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Step-by-step explanation:

The below given steps will be followed to construct the required triangle.

Step I: Draw a line segment BC of 7 cm. At point B, draw an angle of 120°, say ∠XBC.

Step II: Cut a line segment BD = 18 cm (that is equal to AB + AC) from the ray X.

Step III: Join DC and make an angle DCY equal to ∠BDC.

Step IV: Let CY intersect BX at A. ΔABC is the required triangle