Lesson 4-3Lesson 4-3Congruent Congruent TrianglesTriangles

Ohio Content Standards:

Ohio Content Standards:

Describe and apply the properties of similar and congruent figures; and

justify conjectures involving similarity and congruence.

Ohio Content Standards:

Make and test conjectures about characteristics and properties (e.g.,

sides, angles, symmetry) of two-dimensional figures and three-

dimensional objects.

Ohio Content Standards:

Use coordinate geometry to represent and examine the properties of

geometric figures.

Ohio Content Standards:

Make and test conjectures about characteristics and properties (e.g.,

sides, angles, symmetry) of two-dimensional figures and three-

dimensional objects.

Ohio Content Standards:

Represent and analyze shapes using coordinate geometry; e.g.,

given three vertices and the type of quadrilateral, find the coordinates

of the fourth vertex.

Ohio Content Standards:

Represent and model transformations in a coordinate plane and describe the results.

Congruent Triangles

Congruent Triangles

Two triangles whose corresponding parts are

congruent.

A tower roof is composed of congruent triangles all converging

toward a point at the top.I

LKJ

H

A tower roof is composed of congruent triangles all converging

toward a point at the top.

Name the corresponding congruent angles and sides of HIJ and LIK.

I

LKJ

H

A tower roof is composed of congruent triangles all converging

toward a point at the top.

Name the congruent triangles.

I

LKJ

H

Name the congruent angles and sides for the pair of

congruent triangles.

Name the congruent angles and sides for the pair of

congruent triangles.

XYZTUV

Congruence Transformations

Congruence Transformations

The results of reflecting, rotating, and translating

figures.

'.'' t Verify tha TSRRST

T’

T

S’

S

R’

R

'.'' t Verify tha TSRRST

T’

T

S’

S

R’

R

Name the congruence transformation for RST and R ’S ’T ’.

Assignment:Assignment:

Pgs. 195-198 Pgs. 195-198 10-24 evens, 10-24 evens, 40-50 evens40-50 evens