Help with this question please

1. what is the measure of ∠abc? what is the measure of ∠abd?

What describes horizontal cross section of the right rectangle 6m 8m 5m

Given the numbers c = –3 and d = 4, which statement is true? a. |–c| = 3 and |–d| = –4 b. |–c| = 3 and –|d| = –4 c. –|c| = –4 and –|d| = 3 d. |–c| = 3 and –|d| = 4