Question

if three angles of a triangle are x degree,4x degree,5x degree then find x.Also determine whether the triangle is obtuse angled​

Answer 1

Answer:

Sum of internal angles of any triangle =

180

∘

∴

x

+

2

x

+

3

x

=

180

∘

∴

6

x

=

180

∘

∴

x

=

30

∘

So the angles are:

30

∘

,

60

∘

and

90

∘

Answer 2

Answer:

18 is the answer

Step-by-step explanation:

given,

first triangle=x

second traingle=4x

third traingle=5x

we know that,

angleA+angleB+angleC=180°

x+4x+5x=180°

10x=180°

x=180/10

x=18