The angles of a triangle are (2x + 10) deg, (3x - 30) deg and (x + 20) deg. Use the angle sum property to find x, then state the largest of the three angles.

Question

Accepted Answer

x = 30, largest 70°. (2x+10)+(3x-30)+(x+20) = 180 gives 6x = 180, so x = 30. The angles are 2(30)+10 = 70, 3(30)-30 = 60 and 30+20 = 50. The largest is 70°.

The angles of a triangle are $(2 x + 10)$ deg, $(3 x - 30)$ deg and $(x + 20)$ deg.
Use the angle sum property to find $x$ , then state the largest of the three angles.

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 7 Angle Sum Property practice

The angles of a triangle are (2x+10) deg, (3x−30) deg and (x+20) deg.Use the angle sum property to find x, then state the largest of the three angles.

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 7 Angle Sum Property practice

The angles of a triangle are $(2 x + 10)$ deg, $(3 x - 30)$ deg and $(x + 20)$ deg.
Use the angle sum property to find $x$ , then state the largest of the three angles.