Answer:
a. 5.8+5+7.8+4.5=23.1 units (perimeter)
b. 11.55 units, half
Step-by-step explanation:
Hope this helps
47-51
45-53
43-55
Answer: <DEF & <JKL
they equal 90 degrees
complementary angles equal 90 degrees
42
33+9=42
42-9=33