Make a test

In a right triangle the legs measures a and b, the ipotenuse c. Which are the right formula?
a2+b2=c2
a2+c2=b2
a2 = b2- c2
b2 = c2-a2
The Pythagorean theorem keeps in relations the legs of:
all the triangles
Equilateral triangles
right triangles
Isosceles Triangles.
Which words are missed?
in a ........................ triangle the sum of the ............................ of the lengths of the .................. equal the ..................... of the square of the length of the ...........................
right, ipotenuse, difference, legs, square
ipotenuse, legs, isosceles, sum, squares
right, squares, legs, sum, ipotenuse
If ABCD is right trapezius, which triangles in the picture are right triangle?
ADC
ABC
DBC
BHC
which of the following triangles are right triangle?
AOC
ACB
ACH
OBC
In a right triangle the measures of the legs are 21 cm and 28 cm, the ipotenuse measure
35 cm
49 cm
37 cm
29 cm
In a right triangle the measure of the ipotenuse is 30 cm and one leg is 18 cm, the second leg measure:
18 cm
24 cm
20 cm
22 cm
A stair with 8 steps height 16 cm and wide 25 cm has to cover with a wood table. which is the length of the table?
about 312 cm
about 238 cm
about 136 cm
about 108 cm
Maura has got the bench next to the wall of the classroom. He leans a r10 cm ruler vertically. the ruler slips down of 2 cm, as you can see in the picture. how many cm the foot of the ruler has moved away from the wall?
4 cm
6 cm
5 cm
3,3 cm