Question

the diagram shows a triangle. what is the value of y? y = °

Explanation:

Step1: Recall angle - sum property of a triangle

The sum of interior angles of a triangle is 180°. So, 35°+70° + 2y=180°.

Step2: Simplify the left - hand side

35 + 70+2y=105 + 2y. So, 105+2y = 180.

Step3: Isolate the variable term

Subtract 105 from both sides: 2y=180 - 105.
2y=75.

Step4: Solve for y

Divide both sides by 2: y = 37.5.

Answer:

37.5