Question

the measure of three angles of quadrilateral is 80,90,100 . find the measure of fourth angle .​

Answer 1

Answer:

90

hope it helps!

please mark as brainliest!!

thanks!!!

Step-by-step explanation:

the sum of all angles of any quadrliateral is 360 degrees.

let us take n as the measure of the unknown angle.

we have:

n + 80 + 90 + 100 = 360

n + 270 = 360

n = 360 - 270

n = 90

hence, the missing angle measures 90 degrees.

Answer 2

Answer:

90

Step-by-step explanation:

Quadrilateral = 360

360 - 90 - 100 - 80 = 90

: - )