Question

Three angles of a triangle are 3x+5 x+20 x+25 find x

Answer 1

Answer:

26

Step-by-step explanation:

3x+5+x+20+x+25=180 (Angle Sum Property of Triangle)

5x+50=180

5x=180-50

5x=130

x=130÷5

x=26

Answer 2

Concept

The angle of a triangle is the space formed by the triangle's two side lengths. A triangle has both interior and exterior angles. Interior angles are three angles that exist within a triangle. When the sides of a triangle are extended to infinity, exterior angles are formed. We know that the sum of a triangle's three interior angles equals 180 degrees.

Given

Here, the three angles of a triangles are 3x + 5, x + 20 and x + 25.

Find

We have to find the value of x.

Solution

Since here the angles are interior angles, we can write

3x + 5 + x + 20 + x + 25 = 180

i.e. 5x + 50 = 180

i.e. 5x = 180 - 50 = 130

i.e. x = 130/5 = 26

Hence, the value of x is 26.

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