1.

Read the following statements:

I. All trapezoids consist of two parallel sides.

II. The base angles of all trapezoids are equal in measure.

III. The lengths of the tall trapezoids legs are equal in measure.

Which of the above statements are true?

II only
I only
I, II, and III
II and III only

http://www.mathsisfun.com/geometry/trapezoid.html

What do you think?

|| only

The statement "II only" is true.

To determine which of the statements are true, let's analyze each statement individually:

I. All trapezoids consist of two parallel sides.
This statement is true. By definition, a trapezoid is a quadrilateral with exactly one pair of parallel sides.

II. The base angles of all trapezoids are equal in measure.
This statement is not true. The base angles of a trapezoid are generally not equal, unless the trapezoid is an isosceles trapezoid (a trapezoid with non-parallel sides of equal length).

III. The lengths of the tall trapezoids legs are equal in measure.
This statement is not true. The legs of a trapezoid are generally of different lengths unless the trapezoid is an isosceles trapezoid.

Based on our analysis:
- Statement I is true.
- Statement II is false.
- Statement III is false.

Therefore, the correct answer is "I only" since statement I is the only true statement.