two angles of a triangle are of measure 30 degree 70 degree respectively . find the third angle.
Answers
Answer:
the sum of all the angles of a triangle is 180°
so, let the measure of the third angle be x°
according to the question-
30° an 70° are the other two angles of the triangle
so,
30°+70°+x°=180°
100+x°=180°
x=180-100
x=80°
Step-by-step explanation:
therefore the third angle of the triangle=x°=80°
given:- here in this question, two angles of triangle is given and we have to find the value of the third angle.
⇒ 1st angles=30° , 2nd angle= 70° .
TO FIND:- we have to find the third angle, as we are given with two angles, and value of 3rd angle=?.
SOLUTION:-
"We know that the sum of all the angles of a triangle is 180°."
Let the third angle of the triangle be x° then,
∴30°+70°+x°=180°
⇒100+x°=180°
⇒x=180-100
⇒x=80°.
HENCE, the value of 3RD ANGLE=x=80°
Therefore, third angle= 80°