Question

The sum of the four angles ( a, b, c and d) of a quadrilateral is 360 degree. Find d if a=80 degree, b=105 degree and c= 95 degree​

Answer 1

Answer:

The sum of the four angles ( a, b, c and d) of a quadrilateral is 360 degree. If a=80 degree, b=105 degree and c= 95 degree​ then d is 80 degree.

Step-by-step explanation:

Given:

The sum of the four angles ( a, b, c and d) of a quadrilateral is 360 degree.

if a=80 degree, b=105 degree and c= 95 degree​

d = ?

$a + b + c + d = 360 ^{o} \\\\80^{o} + 105 ^{o} + 95^{o} + d = 360^{o}\\ 280^{o}+ d= 360^{o}\\d = 360 - 280\\d = 80^{o}$

Answer 2

Step-by-step explanation:

If a = 80° , b = 105° , c = 95°

then

80+105+95+Angle D = 360°

280° + Angle D = 360°

Angle D = 80°