Question

the angles of a triangle are 3 x degree , (2 x + 20 degree) and (5 x - 40 degree) find the angles. hence show that the triangle is an equilateral triangle​

Answer 1

Answer:

by angle sum property..

Explanation:

a+ b+ c=180

3x+2x+20+5x-40=180

10x-20=180

10x=180+20

10x=200

x=200/10

x=20

given

b

3x=3(20)=60

2x+20=2(20)+20=40+20=60

5x-40=5(20)-40=100-40=60

hence all the three angles are equal therefore it is an equilateral triangles.

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