Credits goes to my classmates :)

2. When we are talking about a “45-45-90
triangle”, those are the numbers that
represent the measures of the angles of that
triangle.
So, it means the triangle has two 45 degree
angles and one 90 degree angle.
The hypotenuse will always have a length
longer than the legs
45
45
90

3. In plane geometry, constructing the diagonal of a square results in
a triangle whose three angles are in the ratio 1 : 1 : 2, adding up to
180° or π radians. The sides in this triangle are in the ratio 1 : 1 : √2
which follows immediatel from the Pythagorean theorem.
x

5. 8
8
?
What’s the answer?
8 2
8
8