Question

4. In a right-angled isosceles triangle, one angle
is 45°. Find the measure of other two angles.
[Hint: Sum of the angles of a triangle is 180°]​

Answer 1

Step-by-step explanation:

Since,one angle is given right angled = 90°

& it is an isosceles triangle so 2 opp. angles are equal = 45°

Alternative :

Since, Sum of the angles of a triangle is 180°,

One angle is given 90°

So, the sum of other 2 angles must be 90°

Therefore, as one angle is 45° and so the other angle is also 45°.

Answer 2

Answer:

ans will be 45°

Step-by-step explanation:

1st angle = 90°

2nd angle = 45°

Let the 3rd angle be x

90° + 45° + x = 180° [ Sum of all angles ]

135°+ x = 180°

x = 180° - 135°

x = 45°

It is the process

and

without process ( oral ans)

In an isosceles triangle any 2 sides are equal so if it is a right anlgle triangle so it is for sure that one of the side will be 90° and if it is right angled so any one will be only 90° and 2nd angle is also mentioned that is 45 ° so the 3rd angle will also be 45°