PLEASE I NEED AN EXPLANATION ON HOW TO DO THIS! Triangle ABC is congruent to triangle DEF. Angle B is a right angle, and m∠C = 34°. What is m∠D? 34°

46°

56°

64°

56°

Step-by-step explanation:

If ∠B is a right angle (90°), and ∠C is 34°, then ∠A has to be 56°. All angles in any triangle have to add up to 180°.

Now, in congruent triangles, all corresponding angles and sides are also congruent. ∠A corresponds to ∠D, so ∠D also has to be 56°.

  (c)  56°

Step-by-step explanation:

The congruence statement tells you angle D corresponds to angle A. Corresponding angles in congruent triangles have the same measure.

In a right triangle, the acute angles are complements of each other. Angle A is the complement of angle C, so is ...

  ∠A = 90° -34° = 56°

  ∠A = ∠D = 56°

30

step-by-step explanation:

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