2 years ago

Given rhombus PQRS and angle S=40 degrees, what is the measure of angle R

Mathematics

1 answer:

LiRa [457]2 years ago

4 0

the sum of the interior angles of a quadrilateral is 360°

[360 - (40 * 2)] : 2 =

280 : 2 =

140°

-------------------------------

140 + 140 + 40 +40 = 360°

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