Question

construct a triangle ABC whose perimeter is 12.5cm and whose base angle are 60° and 80°​

Answer 1

construct a triangle ABC whose perimeter is 12.5cm and whose base angle are 60° and 80°

Answer 2

Given : A triangle perimeter 12.5 cm &  Base angles are  60°  & 80°

To find :   Construct the triangle

Solution:

Step 1 : Draw  a line segment XY  = 12.5 cm

Step 2 : Make an angle of 60° at X on XY using protector

Step 3 : Make an angle of 80° at Y on XY using protector

Step 4 : Draw angle bisector of 60°  & 80° and let them intersect at A

Step 5 : Draw perpendicular bisector of AX  & AY and let them intersect XY at B  & C

ΔABC is required triangle

∠B = 60° & ∠C = 80° and perimeter = 12.5 cm

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