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25 votes
25 votes
Question on the image
(with the steps)​

Question on the image (with the steps)​-example-1
User RajGan
by
2.6k points

2 Answers

13 votes
13 votes

Answer:

40 degrees

Explanation:

We know that the base angles are congruent (a fancy word for equal) because of the slash marks. This means that both of the base angles are 70.

Every triangle adds up to 180 degrees.

So, You can just do 180 - (70+70)

Algebra version:

70 + 70 + x = 180

140 + x = 180 (subtract 140 on both sides)

x = 40

hope this helps :)

User Karias Bolster
by
3.1k points
22 votes
22 votes

Answer:

40°

Explanation:

The given triangle is a isosceles triangle . And we know that in a isosceles triangle opposite angles are equal . Therefore ,

> x + 70° + 70° = 180°

> x + 140° = 180°

> x = 180° - 140°

> x = 40°

User Spoulson
by
2.6k points