Answer:
<1 and <5
Explanation:
<5 and <2 are vertically opposite. They are not complementary but they are equal
<3 is a right angle. <2 is an acute angle. They are not complementary.
<3 and <6 are both right angles. They are also vertically opposite angles and are are therefore equal. They are not complementary.
Answer: <1 and <5
<1 and 2 are complementary. <2 and <5 are vertically opposite and equal.
<1 and <5 are complementary.