Question

From the triangle given above Find Angle B​

Answer 1

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A triangle ABC is given .

The measurement of angle A = 70

The measurement of angle C = 140

Let the angle B be x

$\implies\:70 \:+\: x\: = \:140$ ( by exterior angle property )

$\implies\:x \:= \:140\: -\: 70$

$\implies\:x \:= \:70$

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⋆EXTERIOR ANGLE  PROPERTY :-  An exterior angle of a triangle is equal to the sum of the opposite interior angles.

⋆ANGLE SUM PROPERTY :- Angle sum property of triangle states that the sum of interior angles of a triangle is 180°.

           

     ⋆What are the types of triangle?

$\implies$ An equilateral triangle has three equal sides and angles.

$\implies$An isosceles triangle can be drawn in many different ways. 2 sides and 2 angles are equal.

$\implies$A right-angled triangle has one 90° angle.

$\implies$ A scalene triangle has three different angles and none of its sides are equal in length

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Answer 2

Answer:

The measurement of angle A = 70

The measurement of angle C = 140

Let the angle B be x

70+x=140 ( by exterior angle property )

x=140−70

⟹x=70