Question

. Two angles of a triangle measure 60 ⁰ and 40 ⁰respectively, find the measure of third angle.

Answer 1

Answer:

Ok It is a very easy question

Step-by-step explanation:

Let the measure of the third angle be x degree

BTP

=60+40+x=180

=100+x=180

=x= 180-100=80

The measure of third angle is 80 degrees.

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Answer 2

Given:

✰ Two angles of a triangle measure 60° and 40° respectively.

To find:

✠ The measure of third angle.

Solution:

According to the sum angle property the sum of interior angles of a triangle add up to 180° degree which means if we add all the interior angles of a triangle it will add up to 180° or their sum will be 180°.

Now, look at the question. Let's understand it!

✭ We will consider third angle as x° and then add all the third angles and we already know that their sum will equal to 180°. We will get one expression and then doing required calculations we can easily find out the value of x which is equal to the third angle of a triangle.

Let's see how...

Let the third angle be x°

Sum of interior angles of a triangle = 180°

➤ 60° + 40° + x° = 180°

➤ 100° + x° = 180°

➤ x = 180 - 100

➤ x = 80°

∴ The measure of third angle = 80°

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