Classification of Triangles A triangle is a polygon with three sides. It has three sides and three vertices. There are seven types of triangles. The sum of the angles of a triangle is 180°.Triangles Types can be classified in two ways:By their sides By their angleswhat are the six types of triangles?Six Various Types of Triangles are Isosceles, … [Read more...] about What are the Different Types of Triangles

# Triangles

## Criteria For Similarity Of Triangles

Criteria For Similarity Of Triangles AAA similarity criterion: If in two triangles, corresponding angles are equal, then the triangles are similar. AA Similarity criterion: If in two triangles, two angles of one triangle are respectively equal the two angles of the other triangle, then the two triangles are similar. SSS Similarity criterion: If in two triangles, … [Read more...] about Criteria For Similarity Of Triangles

## Areas Of Two Similar Triangles

Areas Of Two Similar Triangles Theorem 1: The ratio of the areas of two similar triangles are equal to the ratio of the squares of any two corresponding sides. Given: Two triangles ABC and DEF such that ∆ABC ~ ∆DEF. To Prove: Construction: Draw AL ⊥ BC and DM ⊥ EF. Proof: Since similar triangles are equiangular and their corresponding sides are proportional. … [Read more...] about Areas Of Two Similar Triangles

## How Do You Prove Triangles Are Congruent

How Do You Prove Triangles Are Congruent https://www.youtube.com/watch?v=GmS-p1S_t5E Congruent Figures Two figures/objects are said to be congruent if they are exactly of the same shape and size. The relationship between two congruent figures is called congruence. We use the symbol ≅ for 'congruent to'.Congruence among line segments: Two line segments are congruent if … [Read more...] about How Do You Prove Triangles Are Congruent

## Criteria For Congruent Triangles

Criteria For Congruent Triangles https://www.youtube.com/watch?v=QkU4FZN8MY0Congruent triangles are triangles that have the same size and shape. This means that the corresponding sides are equal and the corresponding angles are equal.Congruent Triangles do not have to be in the same orientation or position. They only have to be identical in size and shape.SSS … [Read more...] about Criteria For Congruent Triangles