Question

question 21 of 27
which of the following is a property of all squares?

a. all 4 sides are congruent.

b. there is only 1 pair of parallel sides.

c. consecutive angles are complementary.

d. there are 4 acute angles.

Explanation:

• Option A: By definition, a square has four sides of equal length (congruent). This is a fundamental property of all squares.
• Option B: A square has two pairs of parallel sides (opposite sides are parallel), so this is incorrect.
• Option C: In a square, all angles are right angles (90 degrees). Consecutive angles in a square are supplementary (90 + 90 = 180), not complementary (which would sum to 90), so this is incorrect.
• Option D: A square has four right angles (90 degrees), not acute angles (acute angles are less than 90 degrees), so this is incorrect.

Answer:

A. All 4 sides are congruent.