# Triangle Congruence Theorems Notes

**This is an extension of asa.**

**Triangle congruence theorems notes**.
The same length for one of the other two legs.;
E.g., in triangle abc, denoted as ∆abc.
In congruence, we looked at the techniques for proving that the triangle as a whole was either congruent or similar.

Congruence of sides is shown with little hatch marks, like this: Also, learn about congruent figures here. Sides opposite to equal angles of a triangle are equal.

In the diagrams below, if ab = rp, bc = pq and ca = qr, then triangle abc is congruent to triangle rpq. Use this applet to investigate triangle congruence theorems. The meaning of congruent in maths is when two figures are similar to each other based on their shape and size.

Right triangle congruence if a triangle is a right triangle, then we know that one angle measure is always _____. A postulate is a statement presented mathematically that is assumed to be true. A closed figure formed by three intersecting lines is called a triangle (‘tri’ means ‘three’).

If two angles and the included side of one triangle are congruent to two angles and the included side of another triangle, then the triangles are congruent. construct viable arguments & critique the reasoning of others. A triangle has three sides, three angles and three vertices.

If the hypotenuse and an acute angle of one right triangle are congruent to the corresponding parts of another right triangle, then the triangles are congruent (figure 7). For two triangles, sides may be marked with one, two, and three hatch marks. By using sss congruence rule, the two triangles are congruent.