in a triangle ABC the sum of three interior angle of a triangle is 180°. angle B=70°,angle C=70°,find angle A
Answers
Answered by
0
Answer:
40°
Step-by-step explanation:
angle a + angle b + angle c = 180°
angle a + 70 + 70 = 180
angle a = 180-140
angle a = 40°
Answered by
3
Given:-
- ∠B of ∆ABC = 70°
- ∠C of ∆ABC = 70°
To find :-
- ∠A of ∆ABC
Let the ∠A be 'x'.
The sum of all interior angles of triangle is 180° -[Given]
So, According to question:-
x = ∠A = 40 °
Thus, the ∠A is 40°.
_____________________
More information:-
- Triangle is a closed figure.
- It consists of three sides and three angles.
- Perimeter of triangle = A + B + C. In which A , B and C are sides of triangle.
- Area of triangle = ¹/₂ × b × h. In which B is base of triangle and h is height of triangle.
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