Question

solve this question step by step

Answer 1

Answer:

angle a +b+c =180

angle   a=b+c

angle a+a=180

a=90

Step-by-step explanation:

Answer 2

Solution :

Let x , y , z are three angles of a triangle.

x + y = z [ given ] ---- ( 1 )

We know that,

x + y + z = 180° [ angle sum property ]

=> ( x + y ) + z = 180°

=> z + z = 180° [ from ( 1 ) ]

=> 2z = 180°

=> z = 180°/2

=> z = 90°

Therefore ,

In a triangle one angle z = 90° ,

it is a right angled triangle.

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