### Home > CC4 > Chapter 11 > Lesson 11.2.3 > Problem 11-82

11-82.

Examine the triangle pairs below, which are not necessarily drawn to scale. For each pair, determine: Homework Help ✎

If they must be congruent. If they are congruent, write a correct congruence statement (such as Δ

*PQR*≅ Δ*STU*) and state the congruence property (such as SAS ≅).If there is not enough information or if they cannot be congruent, explain why you cannot ensure congruence.

a.

b.

Review the Math Notes box in section 7.1.7.

The shared side *BD* is congruent to itself by the Reflexive property.

Calculate the missing angle for each triangle.

Review the Math Notes box in section 7.1.7.