Question

please answer fast urgently ​

Answer 1

Answer:

160°

Step-by-step explanation:

given:

measure of ∠1 = 20°

measure of ∠2 = 90°

measure of ∠3 = 90°

to find:

measure of ∠4

solution:

by angle sum property of a quadrilateral i.e

∠1 + ∠2 + ∠3 + ∠4 = 360°

substituting the value we get

∠20° + ∠90° + ∠90° + ∠4 = 360°

200° + ∠4 = 360°

∠4 = 360° - 200°

hence, ∠4 = 160°

Answer 2

Answer:

As we know sum all 4 angel of a rectangle=360

but u have all three so add up all the three and substact it from 360 to get the 4th angle.

i.e 20+90+90+x=360

=>200+x=360

=>x=360-200

=160

so the 4th angle is 160degree

Step-by-step explanation:

....I hope it help u....❤️.....