Chapter 5: Q1 (page 199)
Complete the following statement with the word always, sometimes, or never.
A square is ___ a rectangle.
Short Answer
A square is always a rectangle.
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Chapter 5: Q1 (page 199)
Complete the following statement with the word always, sometimes, or never.
A square is ___ a rectangle.
A square is always a rectangle.
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In Exercise 4 quad. ABCD is a parallelogram. Find the values of x, y, and z.

Write a paragraph proof.
Given:
Prove: AECF is a .
(Hint: A short proof is possible if certain auxiliary segments ate drawn.)

Study the markings on each figure and decide whether ABCD must be a parallelogram. If the answer is yes, state the definition or theorem that applies.

Study the markings on each figure and decide whether ABCD must be a parallelogram. If the answer is yes, state the definition or theorem that applies.

The quadrilaterals numbered 1, 2, 3, 4, and 5 are parallelograms. If you wanted to show that quadrilateral 6 is also a parallelogram, which of the five methods listed on page 172 would be easiest to use?

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