Question

Three angle of quadrilateral measure 70degree ,95,80,find the measure of forth angle

Answer 1

sum of all the four angles of a quadrilateral is 360°
so let the 4rth angle be x
so,
95+70+80+x=360
245+x=360
x=360-245
x=115

Answer 2

GivEn :-

1st Angle = 70°

2nd Angle = 95°

3rd Angle = 80°

Let the measure of 4th angle be x

To Find :-

Measure of 4th angle = ?

SoluTion :-

We know sum of four angles of a Quadrilateral is 360°

∴ A/q

→ 70 + 95 + 80 + x = 360

→ 150 + 95 + x = 360

→ 285 + x = 360

→ x = 360 - 285

→ x = 115

Therefore, the 4th side measures 115°

Steps Followed :-

• We know that sum of four angles of a Quadrilateral is 360°
• So, we have 3 angles before only
• We added the 3 of them & the missing 4th one was taken as x
• We found the value of x & finally got the measure of 4th angle