# Are all equilateral triangles congruent?

## Are all equilateral triangles congruent?

Sal proves that the angles of an equilateral triangle are all congruent (and therefore they all measure 60°), and conversely, that triangles with all congruent angles are equilateral.

## Can triangles be congruent by AAA?

Four shortcuts allow students to know two triangles must be congruent: SSS, SAS, ASA, and AAS. Knowing only angle-angle-angle (AAA) does not work because it can produce similar but not congruent triangles.

What is a triangle with no congruent sides called?

When a triangle has two congruent sides it is called an isosceles triangle. The angles opposite to the two sides of the same length are congruent. A triangle without any congruent sides or angles is called a scalene triangle.

What are congruent figures Examples?

Congruent Shapes Examples Think of all the pawns on a chessboard. They are all congruent. To summarize, congruent figures are identical in size and shape; the side lengths and angles are the same. They can be rotated, reflected, or translated, and still be congruent.

### Why are 2 triangles congruent?

Two triangles are congruent if they meet one of the following criteria. : All three pairs of corresponding sides are equal. : Two pairs of corresponding sides and the corresponding angles between them are equal. and another pair of corresponding sides are equal in two right triangles.

### How do you prove triangles are similar and congruent?

If two pairs of corresponding angles in a pair of triangles are congruent, then the triangles are similar. We know this because if two angle pairs are the same, then the third pair must also be equal. When the three angle pairs are all equal, the three pairs of sides must also be in proportion.

Which triangles must be congruent?

If two triangles have the same size and shape they are called congruent triangles. If we flip, turn or rotate one of two congruent triangles they are still congruent. If the sides of two triangles are the same then the triangles must have the same angles and therefore must be congruent.

What are the properties of congruent triangles?

Two angles are congruent if and only if they have equal measures. Two segments are congruent if and only if they have equal measures. Two triangles are congruent if and only if all corresponding angles and sides are congruent.

## How do you solve congruent triangles?

3. ASA (angle, side, angle) ASA stands for “angle, side, angle” and means that we have two triangles where we know two angles and the included side are equal. If two angles and the included side of one triangle are equal to the corresponding angles and side of another triangle, the triangles are congruent.

## Do congruent triangles have the same area?

If two triangles are congruent, then they will have the same area and perimeter.

Are all isosceles triangle congruent?

Not all isosceles right triangles are congruent. In order for two triangles to be congruent, they must have the exact same shape and the exact same…

Is congruent and similar the same?

Congruent means being exactly the same. When two line segments have the same length, they are congruent. When two figures have the same shape and size, they are congruent. Similar means that the figures have the same shape, but not the same size.

### What is opposite of congruent?

congruous, congruent(adj) corresponding in character or kind. Antonyms: incongruent.

### What is congruent behavior?

a consistent state of behavior, meaning there is consistency between the goals, values, and attitudes projected and the actual behavior observed. In personality research, ideally, the way you think and feel should also be the way you behave.

Can 1 acute and 2 obtuse form a triangle?

Types of Triangles. All equilateral triangles are equiangular. A right triangle will have 1 right angle and 2 acute angles. An obtuse triangle will have 1 obtuse triangle and 2 acute angles.

Are all right triangles congruent?

No, not all right triangles are congruent. A right triangle is any triangle that contains an angle that is a right angle, which is an angle that has…