Question

Gotta need answers fast like asap, it’s geometry, just fill the blanks pls

Answer 1

Two or more triangles are said to be congruent if and only if they have equal lengths of sides and equal measures of angles.

Thus, the required proof is as shown below:

   STATEMENTS                                             REASONS

1. ΔABC and ΔDEC with AB ≅ DE;

  BC ≅ EC; <1 ≅ <2                                          Given

2. <1 and < ABC; < 2 and <DEC are sup     Sum of angles on a straight line

3. <ABC ≅ <DEC                                Congruent angles of similar triangles

4. ∴ΔABC ≅ ΔDEC                              Side-Angle-Side (SAS) postulate

5. ∴<ACB ≅ <DCE                                         CPCTC postulate

For more clarifications on the properties of congruent triangles, visit: brainly.com/question/1675117

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