Question

A right triangle can also be a(n) _____ triangle.

scalene
equilateral
isosceles
obtuse

Answer 1

This one has 2 answers

X --- obtuse angles are greater than 90
X --- equilateral, no possible to have 3, 90 degree angles in a triangle

Answer 2

You can eliminate a couple to begin...

Obtuse - a right triangle has 1 90 degree angle, and 2 other angles that add to 90. So it can not be obtuse.

Equilateral - Pythgorean theorem a^2 + b^2 = c^2, cant have a=b=c