Question

Which of the following Triangle are Right Angled Triangles ?? ​

Answer 1

Answer:

here is only one triangle

Step-by-step explanation:

right angle triangle is 90

Answer 2

Step-by-step explanation:

in the triangle given,

1st angle is 45⁰ and is also given that the two sides are equal hence we can say that angle 2 will also be 45⁰

now using angle sum property,

angle 1+ angle 2+ angle 3= 180⁰

45⁰+45⁰+angle 3=180⁰

90⁰+ angle 3= 180⁰

angle 3= 180⁰-90⁰

angle 3= 90⁰

therefore, its is a right angled triangle.