body{margin:0;} noscript{z-index: 10000; position: fixed; display: block; height: 100%; width: 100%; background: #fff;} noscript .fa{font-size: 40px; display:block; color: #daa520;} noscript div{margin-top: 6%; padding-left: 20px; padding-right: 20px; text-align: center;} ! You must have JavaScript enabled to use this site.

McGraw Hill Integrated II, 2012

MH

McGraw Hill Integrated II, 2012 View details

4. Rectangles

Continue to next subchapter

Exercise 35 Page 509

Show that the other angles are also right angles.

See solution.

Practice makes perfect

We are asked to write a paragraph proof to show that if a parallelogram has a right angle, then it is a rectangle.

Proof:

According to Theorem 6.6, if a parallelogram has a right angle, then all angles are right angles. If all angles of a parallelogram are right angles, then by definition it is a rectangle.

Subchapter links

Exercises p.508-511