Question

determine the rules for a 45°-45°-90° triangle, and a 30°-60°-90° triangle? confused... plz help

Answer 1

A triangle that have the angles 45-45-90, have the sides like:
a (opposite to 45º), a (opposite to 45º) and asqrt2 (opposite to 90º).

A triangle that have the angle 30º60º90º have the sides like:
a (opposite to 30º), asqrt3 (opposite to 60º) and 2a (opposite to 90º)

Answer 2

45-45-90 is an isosceles right triangle while 30-60-90 is right triangle only