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Consider the Base Angles Theorem.
Statement: If VW ≅ WX, then ∠XVW ≅ ∠WXV.
Theorem: Base Angles Theorem
We are given a diagram.
If VW ≅ WX, then ∠ ≅ ∠ . |
The first part of the given statement, VW≅ WX, tells us that these two sides are congruent. Let's highlight the relevant segments and add the congruence markers to the diagram.
Now we want to identify the congruent angles. To do so, we will use the Base Angles Theorem. Let's recall that theorem.
Base Angle Theorem |
If two sides of a triangle are congruent, then the angles opposite them are congruent. |
By the theorem, since we know that two sides of the triangle — VW and WX — are congruent, then we also know that the angles opposite them are congruent.
When we look at the diagram, we can see that these angles are ∠XVW and ∠WXV. Now we can complete the given statement.
If VW ≅ WX, then ∠XVW ≅ ∠WXV. |