Question

find the measure of the third angle of the triangle two of whose angles are 40°and 70°​

Answer 1

Answer:

70

Step-by-step explanation:

sum of angles in a triangle is equal to 180

let third angle be x

40+70+ x=180

x=180_110

x=70

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Answer 2

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The third angle measure = 70°

Explanation

We know that angle sum of a Triangle is 180°.

Given

The angle measures are

• 40°, 70°

Let us assume the value of the third angle as x

So,

• x + 40 + 70 = 180 [ Angle Sum property of a Triangle]

• x + 110 = 180

• x = 180 - 110

• x = 70°

So, the third angle measures 70°.

Checking

To check our answer we can add all the angle of the Triangle and check whether our Sum is 180°.

• 70° + 40° + 70° = 180°

So, Our answer is correct

Add to your knowledge

To find the perimeter of the Triangle we use the formula

• Side + Side + Side

To Find the Area of Triangle we use the formula

• 1/2 × base × height