Question

solve this questions​

Answer 1

Answer:

a)right angled triangle

b)acute angled triangle

c)acute angled triangle

d)obtuse angled triangle

e)right angled triangle

f)obtuse angled triangle

Step-by-step explanation:

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Answer 2

Concept Understanding :-

• An acute angled triangle is an triangle whose all three angles are less than 90°

[ For Example :- 80° , 40° , 60°

Here, You can observe that this triangles has each angle less than 90°

Hence, It is acute angled triangle. ]

• An Obtuse angle is an triangle whose 1 angle is greater than 90° and other two angles are less than 90°

[ For Example :- 120° , 40° , 20°

Here, you can observe that this triangle has one angle larger than 90° and other 2 angles are less than 90°

Hence, it is obtuse angle ]

• An right angled triangle is an triangle whose one angle is 90° .

[ For. Example :- 90° , 50° , 40°

Here, you can observe that this triangle has one angle is 90°

Hence, it is an right angled triangle ]

Solutions :-

a) 90° , 45° , 45°

Here, you can observe that this triangle has one angle equal to 90°

Hence, it is right angled triangle

b) 60° , 60° , 60°

Here, you can observe that this triangle has each angle less than 90°

Hence, it is an acute angled triangle.

c) 80° , 60° , 40°

Here, you can observe that this triangle has each angle less than 90°

Hence, It is an acute angled triangle

d) 130° , 40° , 10°

Here, you can observe that this triangle has one angle greater than 90° and two angles less than 90°

Hence, it is an obtuse angled triangle

e) 90° , 35° , 55°

Here, You can observe that this triangle has one angle equal to 90°

Hence, it is an right angled triangle.

f) 92° , 38° , 50°

Here, you can observe that this triangle has one angle greater than 90° and two angle less than 90°

Hence, it is an obtuse angled triangle$.$