Answer:
False
Step-by-step explanation:
Angles a and b add to 180° (linear pair), so angle b is 68°.
Answer:
3 times
Step-by-step explanation:
15 * 1/5 = 15/5
=3
Answer:

Step-by-step explanation:
Answer:
27 1/7
Step-by-step explanation:
Multiply 5×5=25 and afterwards multiply 3/7×5=2 1/7
90 degrees exactly. It is four 90 degree angles