Question

three angle of a quadrilateral are 75degree ,90degree and 60degree the fourth angle is​

Answer 1

x=135⁰

Step-by-step explanation:

By ASP ,

the sum of angles should be 360⁰

I.e 75+90+60+x=360⁰

225+x=360

x=360-225

x=135⁰

Answer 2

Step-by-step explanation:

Given:

Three angle of a quadrilateral are

$75 \degree$

$90 \degree$

$60 \degree$

To find :

ᴛʜᴇ ꜰᴏᴜʀᴛʜ ᴀɴɢʟᴇ

Tԋҽσɾɱ:

Sum of all the angles of quadrilateral is 360 degree

Solution

ʟᴇᴛ ᴛʜᴇ ꜰᴏᴜʀᴛʜ ᴀɴɢʟᴇ ʙᴇ x. ꜱᴏ,

$75 + 90 + 60 + x = 360$

$225 + x = 360$

$x = 360 - 225$

$x = 135$

TᕼEᖇEᖴOᖇE, TᕼE 4Tᕼ ᗩᑎGᒪE Iᔕ 135