Question

sum.of two angles of a quadrilateral is 180 what can you say about the other two angles​

Answer 1

Their sum also will be 180°

Because,

Sum of adjacent angles of a parallelogram are always 180°

Answer 2

Answer:

$1st \: angle \: + 2nd \: angle = 180$

$1st + 2nd + 3rd + 4th = 360$

$180 + 3rd + 4th = 360$

$3rd + 4th = 360 - 180$

$3rd + 4th = 180$

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