Question

an exterior angle is drawn to a triangle which is acute then on basis of angle what type of triangle is this
(a) acute angled
(b)obtuse angled
(c)right angled
(d) scalene
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Answer 1

Answer:

obtuse but not sure

Step-by-step explanation:

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Answer 2

option (b)

obtuse angled triangle

Step-by-step explanation:

if the exterior angle is acute (i.e less than 90 degrees )

then the sum of the two angles is less than 90

therefore

$\angle A + \angle B +\angle C = 180\\\\\angle A + \angle B = 180- \angle C\\\\\angle A + \angle B <90\\\\\angle C > 90^\circ$

which is an obtuse angle

hence ,

optio (b)

obtused angled triangle

#Learn more:

The angle in a semi circle is a

(A) acute angle

(C) straight angle

(B) obtuse angle

(D) right angle​

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