Question

two angle of a traingle are 70and 20 , find the thired angle and tell what kind of traingle it is

Answer 1

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Answer 2

$\huge\mathcal{Heya}$
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Let the angles of a triangle be /_A, /_B and /_C

Give two angles :-

/_A = 70°

And

/_B = 20°

Using ASP (Angle Sum Property)

This property states that the Sum of all the three angles of a Triangle is equal to 180°

•°•

/_A + /_B + /_C = 180°

Putting the values of /_A and /_B, we get

70° + 20° + /_C = 180°

90° + /_C = 180°

/_C = 180° - 90°

/_C = 90°

Therefore, The third angle of the triangle is 90°.

As we know that,

In a right - angle Triangle, One angle is equal to 90° and the sum of other two angles is equal to 90°.

Let's check :-

/_C = 90°

And

/_A + /_B = 70° + 20° = 90°

Hence, the triangle is a right - angle Triangle.

$\huge\mathbb{Hope \ this \ helps.}$