Question

a triangle has interior angle measures of 51°, 66°, and w. what is the value of w? w = °

Explanation:

Step1: Recall angle - sum property

The sum of interior angles of a triangle is 180°. So, 51°+66° + w=180°.

Step2: Simplify the left - hand side

51 + 66=117, so the equation becomes 117°+w = 180°.

Step3: Solve for w

w=180° - 117°.
w = 63°.

Answer:

63