Question

7. towers a lookout tower sits on a network of struts and posts. leslie measured two angles on the tower. if m∠1=7x-7°, m∠2=4x 2°, and m∠3=2x 6°, what is m∠1?

Answer 1

The measure of the ∠1 for the given angles of the triangle are found as 1162/13.

Explain the angle sum property of the triangle?

• The internal angle of a triangle is just the angle formed by two of its sides. It is often referred to as the triangle's interior angle property.
• Because of this characteristic, a triangle's interior angles add up to 180 degrees.

The given angles are-

∠1 = 7x - 7.

∠2 = 4x + 2

∠3 = 2x + 6

By the angle sum property of the triangle.

∠1 + ∠2 + ∠3 = 180

Thus,

7x - 7 + 4x + 2 +  2x + 6 = 180

Simplifying,

13x = 179

x = 179/13

So, ∠1 becomes-

∠1 = 7x - 7

∠1  = 7(179/13)- 7

∠1  = 1162/13

Thus, the measure of the ∠1 for the given angles of the triangle are found as 1162/13.

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