Hi Everyone,

Just wondering if someone can help me solve this geometry problem. Should the total of all the angles = 360o?

Question: A model of how a shell grows can be made using enlarged copies of the same triangle.

Here is a picture of a model.

What is the value ofxin degrees?

(a) 53o (b) 138o (c) 143o (d)153o (e) 222o

Thank you.