Chapter 4.5, Problem 6WE

To determine

To name the method (SSS, SAS, ASA, AAS or HL) to prove $△AOB\cong △AOC$

Answer to Problem 6WE

ASA method.

Explanation of Solution

Given:

The given figure is-

  

  $AO\perp \text{ plane M,}\angle B\cong \angle C$

Calculation:

In $△AOB,△AOC$

  $AO\perp \text{ plane M,}$ -----------Angle.

  $\angle B\cong \angle C$ .............Angle

  $AO\cong AO$ .............Side

By ASA property both the triangles $△AOB\cong △AOC$ are congruent.