A piece of square red paper, 77 cm long, can be made into a right triangle with a bottom of 15 cm and a height of 12 cm

A piece of square red paper, 77 cm long, can be made into a right triangle with a bottom of 15 cm and a height of 12 cm

It can be 6 × 5 × 2 = 60 right triangles with a base of 15 cm and a height of 12 cm

If the three sides of a right triangle are in an equal ratio sequence, then the relationship between the three sides is the same

Let three sides be: a AQ AQ * 2 (0 < Q < 1)
a^2=(aq）^2+(aq^2)^2
1=q^2+q^4
q^4+q^2-1=0
q^2＝（√5－1）／2
(1) Ratio of three sides: 1: (√ 5-1) / 2: [(√ 5-1) / 2] ^ 2
=4：（2√5-2）：(6-2√5)
=2:（√5－1）:（3-√5）

In a right triangle, a

Pythagorean theorem c * C = a * a + b * B
Then a * C = b * B, so c * C = a * a + A * C, divide both sides by a * C to get C / a = A / C + 1, and solve the equation to get the value of a: C
Pure hand look