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The Question is:

Three angles in a triangle are given by 4x+10, 3x+15, and 2x+20.

a) Draw a diagram, and write an equation linking these angles together.

b) Solve the equation for x.

c) State the value of the three angles in the triangle.

What I want to know:

- What type of triangle would it be?
- How would you write an equation that shows their 'relationship' with one another?
- Where would you start when solving for x?

2 answers

4x+10 + 3x+15 + 2x+20 = 180
find x, and then the rest is easy
4x+10+3x+15+ 2x+20=180

9x+45=180

Divide through by 9

x+5=20

X=20-5=15

Plug the value of x into
(4x+10)°=
(3x+15)°=
(2x+20)°=
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