Introduction to Coordinate Proofs - Triangles
Prove triangles are congruent.
It is easier to show congruent segments on the coordinate plane, rather than congruent angles.
SSS is the most common reason we will use to prove triangle are congruent on the coordinate plane.
(If we have right triangles, we could also use SAS or HL.)
What information could be used to prove whether or not ?
Prove whether or not
Prove whether a triangle is a right triangle.
Since right angles are formed by perpendicular lines, we try to prove whether two of the triangle's sides are perpendicular.
Prove a triangle is a right triangle. (hint: perpendicular lines make right angles)
Prove whether or not is a right triangle.