QUESTION IMAGE
Question
complete the paragraph proof.
given: m is the midpoint of \\( \overline{pk} \\)
\\( \overline{pk} \perp \overline{mb} \\)
prove: \\( \triangle pkb \\) is isosceles
it is given that m is the midpoint of \\( \overline{pk} \\) and \\( \overline{pk} \perp \overline{mb} \\).
midpoints divide a segment into two congruent
segments, so \\( \overline{pm} \cong \overline{km} \\). since \\( \overline{pk} \perp \overline{mb} \\) and perpendicular
lines intersect at right angles, \\( \angle pmb \\) and \\( \angle kmb \\) are right
angles. right angles are congruent, so \\( \angle pmb \cong \angle kmb \\).
the triangles share \\( \overline{mb} \\), and the reflexive property
justifies that \\( \overline{mb} \cong \overline{mb} \\). therefore, \\( \triangle pmb \cong \triangle kmb \\) by the
sas congruence theorem. thus, \\( \overline{bp} \cong \overline{bk} \\) because
__________. finally, \\( \triangle pkb \\) is isosceles because it
has two congruent sides.
corresponding parts of congruent triangles are
congruent
base angles of isosceles triangles are congruent
of the definition of congruent segments
We know that \(\triangle PMB\cong\triangle KMB\) by \(SAS\) (Side - Angle - Side) congruence theorem (\(\overline{PM}\cong\overline{KM}\), \(\angle PMB\cong\angle KMB\), \(\overline{MB}\cong\overline{MB}\)). When two triangles are congruent, their corresponding parts are congruent. In the context of \(\triangle PMB\) and \(\triangle KMB\), \(\overline{PB}\) and \(\overline{KB}\) are corresponding parts.
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corresponding parts of congruent triangles are congruent