Thursday, January 22, 2015

April 2014: Raiders of the Lost Ark, Descartes, Taxes, and NASA

(from April 29, 2014)

"Right Triangle Bisector question"

AC = 9
What is h?

Answer and more trig questions at

(from April 23, 2014)

"Raiders of the Lost Arc"

More math cartoons at
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(from April 17, 2014)

 "Rene and Emily"

"I think, the 4i, Em..."

(from April 15, 2014)

"Tax Figures"

Is this bad form?

(from April 9, 2014)

"Seating Arrangement" 

Our 10-person math club is meeting for dinner at a restaurant. (Unfortunately, the club has 2 members that I do not like.). The restaurant has round tables that seat exactly 10 people. 
If I show up last, what is the probability that the remaining seat is next to someone I don't like?

Answers and more questions
in the spare parts section

(from April 6, 2014)


Mission Impossible


Wednesday, January 21, 2015

March 2014: Birthdays, Survivor, Baking a pi, and the ice cream man

(from March 26, 2014)

"Odd Jobs"

7 does some freelance work...

(from March 21, 2014)


The Odd one gets voted off the island first!

Find the weekly math comic at

(from March 17, 2014)

"Discount on a new shirt"

A department store is having a 30% off sale on all shirts. I find one that I like, so I go to the cashier and pay $25. He gives me $2.67 in change, and then I leave with my new rainbow shirt.

If sales tax is 10% of the final purchase price, what was the original (retail) price of the shirt?

Go here for the SOLUTION and more pre-algebra word problems

 (from Pi Day, 2014)

"Mixing it up"

 Want another slice of pi?  Visit the mathplane pi page...

(from March 11, 2014)

"Pythagorean Theorem and Perimeter"

 Quick math question: What is the perimeter of the triangle?

Solution and more math questions are here 

(from March 6, 2014)

"Ice Cream Man"

More mathplane comics posted at facebook, pinterest, and Google+....

(from March 2, 2014)

"Right Triangle Area Question"

What is the total (green) area inside the 2 triangles?

Read here for the solution.

Find more trig right angle questions at