Question

Two angles of a triangle are 150 and 30 find the third angle

Answer 1

Answer: We know sum of all angles of a triangle is 180°

Let the third angle be x

Then 150° + 30°+ x = 180°

=> 180° + x = 180°

=> x = 0°

A triangle cannot have an angle as 0° , so it is impossible to draw a triangle with two angles 150° and 30°

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Answer 2

Answer:

Correct Question :

Two angles of a triangle are of measures 50° and 30° degree . Find the measure of the third angle .

Given :

⬤ Two angles of Triangle are of Measures 50 and 30 .

To Find :

⬤ Measure of Third Angle .

Solution :

First Angle = 50°

Second Angle = 30°

Let :

The third Angle of the Triangle be x .

As we know that , Sum of all Angles of a Triangle are 180 degree . Hence ,

80 + x = 180°

x = 180 - 80

x = 100

Therefore , The Third angle of the Triangle is 100° .

Check :

50° + 30° + x = 180°

50 + 30 + 100 = 180°

80 + 100 = 180°

180° = 180°