The right triangle theorem

The size of the right angle is ...

• 60^o

• 100^o

• 90^o

• 180^o

The right triangle has ...

• one straight angle

• two straight angles

• three straight angles

• no straight angles

Which mathematician discovered the theorem about right triangles?

• Archimedes

• Pythagoras

• Euclid

• Fibonacci

Which is the correct form of the Pythagoras theorem? (if c is the hypotenuse)

• c²=a+b

• a²=c²+b²

• b²=a²+c²

• c²=a²+b²

If the two legs of the right triangle are 3 and 4, the hypothenuse is ...

• 5

• 7

• 9

• 11

If the hypothenuse of the right triangle is 10, and one leg is 8, find the second leg.

• 12

• 10

• 8

• 6

If a triangle has three sides with length 5, 12, 13, is it strait?

• sometimes

• no

• yes