Question

The angles of a triangle are 38 degree and 2 x + 20 degree and 5 x minus 30 degree find the angles hence show that the triangle is an equilateral triangle

Answer 1

Answer:USING ANGLE SUM PROPERTY :

38+(2x+20)+(5x-30)=180

38+2x+20+5x-30=180

28+7x=180

7x=180-28

7x=152

x=21

All the angles are :

3x=3×20=60

2x+20=2×20+20=40+20=60

5x-40=5×20-40=100-40=60

All the angles are of 60° therefore it is an equilateral triangle

Answer 2

Answer:

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