In Exercises 27 to 32, use SSS, SAS, ASA, or AAS to prove that the triangles are congruent.
Given: 

Prove: 

To prove:
The triangle
Given:
The triangles
Figure
From figure
Property used:
The angle formed by two perpendicular lines is of measure
Approach:
Consider the triangle,
From the given data,
And the line
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