Question

*The two angles of a triangle are 78 ° and 82°. So what is the measure of the remaining third angle?*

1️⃣ 160°
2️⃣ 20°
3️⃣ 360°
4️⃣ 180°​

Answer 1

Answer :

20 is the answer

Explaination:

$one \: angle \: is \: 78 \: \: and \: another \: \: \\ angle \: is \: 82 \:$

$so \: some \: of \: three \: angles \: in \: a \: \\ triangle \: is \: 180$

one angle is =78

another angle is =82

here we want take the 3 rd angle as ( x).

some of three angles in a triangle is 180

➨ 78 + 82 + x = 180

➨ 160 + x = 180

➨ x = 180 - 160

➨ x = 20

[ I think my answer will help you]

Answer 2

Given:

The two angles of a triangle are 78 ° and 82°.

To find:

The third angle

Solution:

The first and second angles are given as 78 ° and 82° respectively.

We have to find the third angle.

We know that the sum of all the angles in a triangle is equal to 180°

Let the third angle be A°

=> 78 + 82 + A = 180

=> 160 + A = 180

=> A = 180 - 160

=> A = 20°

Hence, the required answer is option -2 => 20°