Question

how to find exterior ​

Answer 1

Step-by-step explanation:

ANSWER:-

Given :-

• 2 angles of the Triangle.
• One is 50°
• Another is 70°.

To find:-

The value of x.

Let's Do!

We know that sum of all angles of a Triangle is equal to 180°.

So, according to question:-

$50 + 70 + y = 180$

If we consider y as supplementary of x.

$120 + y = 180$

$y = 180 - 120$

$y = 60$

So, we got y as 60.

$180 - x = y$

$180 - x = 60$

$x = 180 - 60$

$x = 120$

So, we get 120° as the final answer.

Also, 50+ 70 gives us 120°. So, that's the final answer.

Angle sum property of the traingle is to be remembered.

Answer 2

Answer:

Given :-

• A triangle whose two sides are given
• As 50⁰ and 70⁰

To Find :-

Value of x

Solution :-

As we know that sum of all sides of triangle is 180⁰.

$\tt \: 50 + 70 + y = 180$

Now,

Let us assume y as supplement of x

$\tt \: 120 + y = 180$

• As supplement of any two angle is 180⁰.

$\tt \: y = 180 - 120$

$\tt \: y = 60$

Now,

Let find x

$\tt \: 180 - x = y$

$\tt \: 180 - x = 60$

$\tt \: x \: = 180 - 60$

$\tt \: x \: = 120 \degree$

Hence :-

Value of x is 120⁰