Uhh I need help for this test-

A trapezoid... not a rectangle, my bad

A. We can determine the measurement of angle A by considering that angle A and the 135-degree angle are supplementary. Supplementary angles are angles in a straight line and together they add up to 180 degrees. So, to find A, we just subtract 135 degrees from 180.



ANSWER: The measure of angle A is 45 degrees.

b. Similarly, we can get the measurement of angle B by considering that A and B are supplementary angles. We can therefore get its measurement by subtracting 45 from 180.



Additionally, we can also use the concept of vertical angles. Vertical angles are angles opposite each other in any intersecting lines. These angles have equal measurements. We know for a fact that opposite angle B is 135 degrees therefore it must also be 135 degrees.

ANSWER: The measure of angle B is 135 degrees.

c. Since the two strings are parallel, we can see some similarities between the angles in string 1 and string 2. We can notice that the measure of angle C should just be the same as the measure of angle A since both angles are located at the same location of the string. Therefore, angle C will also be equal to 45 degrees.

ANSWER: The measure of angle C is 45 degrees.