A triangle has side lengths g, h, and k. The relationship among the side lengths of this triangle is shown. h2+k2=g2
Which statement must be true?

The angle opposite side h=45°.

The angle opposite side k=90°.

The triangle is a right triangle.

The triangle is not a right triangle.

Distributive property

Idon't see any graph, however the graph of the function : f(x) = x²-2x+3 is a parabola: 1) open upward (since a> 0)2) it intersects y-axis in 3 (y=3)3) its axis of symmetry is x = +1 ( -b/2a)4) it's minimum is y = -2, so its vertex is (1,-2)5) it doesn't intersect the x-axis since discriminant < 0