Question 2
1)
,
(given)
2)
(reflexive property)
3)
and
are right angles (perpendicular lines form right angles)
4)
and
are right triangles (a triangle with a right angle is a right triangle)
5)
(HL)
Question 3
1)
is a right angle,
,
(given)
2)
is a right angle (perpendicular lines form right angles)
3)
and
are right triangles (a triangle with a right triangle is a right angle)
4)
(reflexive property)
5)
(HL)
6)
(CPCTC)
7)
bisects
(if a segment splits an angle into two congruent parts, it is an angle bisector)