your work 1 None of the above Question 4 Given j lI k and AA

your work 1) None of the above Question 4 Given j lI k and AABC. m23-819, and m24-42, find m21. a 81 b) 138 c) 123° d) 99° e) 570 t None of the above Question 5 Given ABC with B-D-E-C. m2.3-mL4-20°, and mL-mL2 70%, find me. here to search e

Solution

Here\' how to solve the problem:

a3 = 81
a4 = 42
Since ABC is a triangle, we sum upto 180
= a2 = 180-a3-a4 = 180 - 42-81 = 57

a1 +a2 = 180
So, a1 = 180-a2= 180= 180-57 = 123 degrees

So, answer is C