Question

Explain these statements pls

Answer 1

Answer:

all of these are correct

Step-by-step explanation:

1. becoz if obtuse angle and right angle then it ends up forming a quadrilaterl

2 . becoz the sum should be pess than 180 degree so if two angles are greater than 90 it wil be more than 180 degree so not true

3. the differwnce needs to be less or will end up forming quadrilateral

Answer 2

Answer:

(a) correct

as sum of angle of triangle is 180°

let , one angle is obtuse(90+x)

and other is 90°

=> (90+x) + 90 + A = 180°

=> x+A = 0

which is not possible

(b) correct

let one angle be obtuse (90+x)

and 2nd angle is also obtuse (90+y)

=> (90+x) + (90+y) + A = 180°

=> x + y + A = 0

this is not possible

(c) difference should be less than 3rd side

as only option d has both a and b so

option D is answer