Triangle Vocab
What are the sides of the triangle next to the right angle?
Legs of a triangle
When one leg=3 and the other leg=4 then the hypotenuse=?
What is 5
Is √49 a rational number? Why or why not?
Yes, because √49 = 7, and 7 is a rational number.
√36 is 6. What is √40 closest to?
6 (just a little more than √36)
Convert 0.333… to a fraction.
1/3
What is the side of the triangle across from the right angle?
Hypotenuse of a triangle
When one leg=6 and the hypotenuse=10 then the other leg=?
What is 8?
Is π a rational number?
No, π is irrational because it cannot be written as a fraction.
Is √50 closer to 7 or 8?
Closer to 7 (√49 = 7)
Convert 0.7272… to a fraction.
72/99 → 8/11
What is the Pythagorean Theorem
What is a^2+b^2=c^2
When one leg=3 and the other leg=5 then the hypotenuse=?
What is the square root of 34
Is 0.333… a rational number?
Yes, it is a repeating decimal and equals 1/3.
Order from least to greatest: √2, 1.5, √3
1.5, √2, √3
Convert 0.123123… to a simplified fraction.
123/999 → 41/333
What is the only type of triangle that works with the Pythagorean Theorem.
Right Triangle
When one leg=10 and the other leg=9 then the hypotenuse=?
What is the square root of 181?
Is √18 rational or irrational?
Irrational, because √18 is not a perfect square and its decimal goes on forever without repeating.
What whole number is √90 closest to?
9 (√81 = 9)
Convert 0.8181… to a simplified fraction.
81/99 → 9/11
What is the name of the guy who discovered the theorem we have been learning about?
Pythagoras
When one leg=9 and the hypotenuse=12 then the other leg=?
What is 15?
Which of these numbers is irrational: 4/5, √64, 0.25, √10, 1.2?
√10 is irrational. The rest are rational.
Fill in the blank: √121 < ___ < √144
Any number between 11 and 12 (e.g., 11.5)
Convert 0.454545… to a simplified fraction.
45/99 → 5/11