Question

The measure of exterior angle of triangle is 130 and 140 respectively. Which type of triangle is it?

Answer 1

Answer:

right angled triangle

Step-by-step explanation:

let the interior angles of the triangle be x,y,z

therefore , by the concept that exterior angle =sum of opp. two interior angles we get

x+y=130

x+z=140

adding these two eqn

2x+y+z=270 ....(i)

and also x+y+z=180 (angle sum prop) ......(ii)

comparing (i) and (ii)

we get

2x-x=270-180

x=90

therefore the mentioned triangle is a right angled triangle

Answer 2

right angled triangle