Question 8
1)
with
,
(given)
2)
(reflexive property)
3)
(SAS)
Question 9
1)
and
are the legs of isosceles
,
(given)
2)
and
are right angles (definition of perpendicular lines)
3)
(angles opposite the legs of an isosceles triangle are congruent)
4)
(reflexive property)
5)
(all right angles are congruent)
6)
(AAS)
Question 10
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)
6)
(CPCTC)