The two angles of a triangle ratio of 5: 4. Imagine if one angle is 10 'higher than the second angle, then known as the angle.
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Sum of three angles of a triangle is 180°.
5x+4x+x=180°
10x=180
x=180/10
x=18
x=5×18
x=90
x=4×18
x=72
90+72+x=180
162+x=180
x=180-162
x=18
so,
90+72+18=180°
5x+4x+x=180°
10x=180
x=180/10
x=18
x=5×18
x=90
x=4×18
x=72
90+72+x=180
162+x=180
x=180-162
x=18
so,
90+72+18=180°
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