Conditions for Congruence of Triangles:

**SSS (Side-Side-Side)**

**SAS (Side-Angle-Side)**

**ASA (Angle-Side-Angle)**

**AAS (Angle-Angle-Side)**

**RHS (Right angle-Hypotenuse-Side)**

## How do I know my SSS SAS ASA AAS?

BASICS TO SSS, SAS, ASA, AAS RULES:

- SSS stands for “side, side, side” and means that we have two triangles with all three sides equal.
- SAS stands for “side, angle, side” and means that we have two triangles where we know two sides and the included angle are equal.

## What are the 4 triangle congruence theorems?

There are many tests that prove triangle congruence without comparing all three sides and all three angles. These include the side-side-side (SSS) theorem, the side-angle-side (SAS) theorem, the angle-angle-side (AAS) theorem, and the angle-side-angle (ASA) theorem.## What is SSS vs SAS vs ASA vs AAS?

SSS refers to the equality of three sides between triangles. AAS refers to the equality between two sides and an angle between triangles. SAS refers to the equality between two sides and an angle (between the sides) between triangles. ASA refers to the equality between two angles and one side between triangles.## What is an example of AAS?

Examples of AAS (Angle-Angle-Side)Two triangles ABC and DEF such that BC is parallel to EF and angle C = angle F and AD = BE. It is given that BC is parallel to EF, angle C is equal in measure to angle F, and |AD| = |BE|. Then, it is true that B = E, because corresponding angles of parallel lines are congruent.

## Triangle Congruence Theorems, Two Column Proofs, SSS, SAS, ASA, AAS Postulates, Geometry Problems

## What is AAS rule?

AAS stands for Angle-Angle-Side. When two angles and a non-included side of a triangle are equal to the corresponding angles and sides of another triangle, then the triangles are said to be congruent.## What are the 5 theorems?

Thus the five theorems of congruent triangles are SSS, SAS, AAS, HL, and ASA.

- SSS – side, side, and side. ...
- SAS – side, angle, and side. ...
- ASA – angle, side, and angle. ...
- AAS – angle, angle, and side. ...
- HL – hypotenuse and leg.

## What is the 4 right angles theorem?

Theorem: If two lines are perpendicular, then they intersect to form four right angles.## What is AAS vs ASA vs SAS?

SAS Criteria: Side-Angle-Side. ASA Criteria: Angle-Side-Angle. AAS Criteria: Angle-Angle-Side. RHS Criteria: Right angle- Hypotenuse-Side.## Is AAS and SAA the same?

ASA stands for "angle, side, angle" and means that we have two triangles where we know two angles and the included side are equal. And AAS stands for "angle, angle, side" and means that we have two triangles where we know two angles and the non-included side are equal.## What is a ASA postulate?

The Angle-Side-Angle Postulate (ASA) states that if two angles and the included side of one triangle are congruent to two angles and the included side of another triangle, then the two triangles are congruent.## Is ASA and AAS the same?

The main difference between ASA and AAS is the order in which the angles and sides are congruent. In ASA, the included side is between the two congruent angles, while in AAS, the non-included side is opposite to one of the congruent angles.## How do you memorize all theorems?

The best way to remember theorem statements is to work through their proofs. Theorem proofs are like stories. It's much easier to remember what happens at the end of a story if you know how it progresses.## What is the hardest theorem?

“There are no whole number solutions to the equation xn + yn = zn when n is greater than 2.” Otherwise known as “Fermat's Last Theorem,” this equation was first posed by French mathematician Pierre de Fermat in 1637, and had stumped the world's brightest minds for more than 300 years.## What is the most famous mathematical theorem?

Pythagoras Theorem: In a right-angled triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides.## How do you tell if a triangle is ASA or AAS?

If two pairs of corresponding angles and also if the included sides are congruent, then the triangles are congruent. This criterion is known as angle-side-angle (ASA). Another criterion is angle-angle-side (AAS), where two pairs of angles and the non-included side are known to be congruent.## What is the SAS criteria?

What is the SAS similarity criterion? The SAS similarity criterion states that If two sides of one triangle are respectively proportional to two corresponding sides of another, and if the included angles are equal, then the two triangles are similar.## Is AAS always congruent?

The AAS TheoremThe angle-angle-side theorem, or AAS, tells us that if two angles and a non-included side of one triangle are congruent to two angles and a non-included side of another triangle, then the triangles are congruent.