Question

@midhun.madhu1987
How can you prove a triangle is isosceles?

Use the distance formula to see if at least two sides are congruent.

Use the slope formula to see if any sides are perpendicular.

Use the distance formula to see if all three sides are congruent.

Use the slope formula to see if any sides are parallel.

Answer 1

Ive got A on this one

Answer 2

Yes.. its A

If we can prove 2 sides equal, then it will be an isosceles triangle....

Answer 3

Quadrilateral ABCD has coordinates A (3, 1), B (4, 4), C (7, 5), D (6, 2). Quadrilateral ABCD is a

rectangle, because opposite sides are congruent and adjacent sides are perpendicular

square, because all four sides are congruent and adjacent sides are perpendicular

parallelogram, because opposite sides are congruent and adjacent sides are not perpendicular

rhombus, because all four sides are congruent and adjacent sides are not perpendicular

Answer 4

@midhun.madhu1987

Answer 5

Ive got D on this one.

Answer 6

It is D because AB=BC=CD=AD = Square root of 10. and the diagonals AC>BD. therefore it is a Rhombus.

In a Square, diagonals are equal.

Hope this clarifies... :)