## Thursday, April 2, 2009

### Geometry EOCT Problems 5-8

Welcome back! Send me you answers! If you have not started these problems yet, go back to #1 on yesterday's post and get started. Keep a notebook with all of your problems worked out.

5. If a=b and b=c, than a=c illustrates which property?
a. Reflexive b. Commutative c. Transitive d. Distributive

6. Given A = (6,3) and B = (8, -2). Find AB. (AB means the distance from A to B).
The formula you need for this problem is on the formula sheet. Just make sure you know how and when to use it.

7. Given: "If a, then b." Write the:
Inverse: "If not a, then not b." Could be written: "If ~a, then ~b."

Contrapositive
: "If not b, then not a." Could be written: "If~b, then ~a."

8. Draw a triangle that has two angles which each measure 43 degrees.
a. Is the triangle isosceles, equilateral, or scalene?
b. What is the measure of the 3rd angle?
c. Is the triangle right, acute, or obtuse?

Answer: The triangle is isosceles because 2 sides are congruent. The 3rd angle measures 94 degrees, so the triangle is obtuse.

Enjoy the rest of the day! See you tomorrow!

The Mathster
realmathinaminute@hotmail.com