Question

if the three angles of a quadrilateral are 70 ° then it fourth angle must be
1. Obtuse angle
2. acute angle
3. right angle
4. none of these ​

Answer 1

1. Obtuse angle

Becoz, 70+70+70+4th angle= 360°

so, 360-210= 4th angle

4th angle = 150°

150°= obtuse

HOPE IT HELPS :)

Answer 2

Answer:

Hope this is OK for you completely