Abcd is a quadrilateral. three of the angles of abcd measure 100°, 87°, and 106°, respectively. find the measure of the missing angle.

A quadrilateral is a polygon with four sides and four angles like a square, rectangle, diamond, or a trapezoid. A condition to be met for the angles of a quadrilateral is that the angles should sum up to 360 degrees. The four angles of a quadrilateral can be a combination of a right angle, acute angle, or an obtuse angle. Thus, for this problem, the missing angle is:

360°-100°-87°-106° = 67°

Do the math. she originally had 50 dollars on her gift card and she had 12 dollars left on her gift card after she finished her shopping spree. if you subtract 50 minus 12 you get thirty eight dollars as your answer. so therefore, ciara spent 38 dollars total o