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swat32
3 years ago
7

1. In a triangle the ratio of two

Mathematics
1 answer:
Stella [2.4K]3 years ago
6 0

<em>Answer:</em>

<em>The unknown angles are 45 and 63</em>

<em>Step-by-step explanation:</em>

<em>5x + 7x + 72 = 180 (angle sum property)</em>

<em>12x + 72 = 180</em>

<em>12x = 180 - 72</em>

<em>12x = 108</em>

<em>x = 108/12</em>

<em>x = 9 </em>

<em />

<em>Therefore, 5x = 5*9 = 45</em>

<em>                 7x = 7*9 = 63</em>

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