Pythagorean Theorem Review Part 1

The Pythagorean Theorem ONLY works on which triangle? 

• obtuse
• scalene
• isosceles
• right

Why do we use the Pythagorean Theorem?

• To find the missing side of a right triangle
• To find the area of a triangle
• To find the volume of a cone
• To find the circumference of a circle

What is a right triangle?

• A triangle where all sides equal 90 degrees

• A triangle where every angle is 90 degrees

• A triangle where all three sides are equal

• A triangle where there is a 90 degree angle

The legs form what type of angle?

• Acute
• Obtuse
• Reflex
• Right

The Pythagorean Theorem is
a² + b² + c²

• false
• true

Side a on a right triangle is ALWAYS the longest side.

• true
• false

What letter represents the hypotenuse?

• a

• b

• a and b

• c

What is the final step in solving this work for c?
a² + b² = c²
3² + 4² = c²
9 + 16 = c²
25 = c²

• Divide both sides by 2
• Take the square root of both sides

Which equation can be used to solve for "x"?

• 15² – x² = 21²

• x² – 15² = 21²

• 15² + 21² = x²

• 21² – 15² = x²

Find the length of the missing side. 

• 17 cm
• 22 cm
• 15 cm
• 13 cm