Download Chapter 5 Congruent Triangles Grade: 9

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Chapter 5 Congruent Triangles
Course:
Geometry
4
Students can analyze and complete a flow proof, proving
triangles congruent; connect the use of triangles in real world
situations.
3
Students can identify congruent figures and prove triangles
congruent using SSS, SAS, AAS, ASA, and HL theorems and
postulates. Use theorems about isosceles and equilateral
triangles and perform transformations.
Students can distinguish different triangles by angle measures
and side lengths, and find measures of angles of triangles.
1
Grade: 9-12 Mathematics
Learning Goal:
Students will classify triangles by sides and angles, prove triangles are congruent and use coordinate geometry to
investigate triangle relationships.
Standards: MAFS.912.G.CO.1.2, MAFS.912.G.CO.2.6, MAFS.912.G.CO.2.8,
MAFS.912.G.CO.3.10
2
Date
Students can recall specific vocabulary terms:
 Scalene, isosceles, equilateral, obtuse, acute, right,
equiangular, congruent figures, corresponding parts, rigid
motion, right triangle, legs, hypotenuse, flow proof,
isosceles triangle, equilateral triangle, equiangular triangle
Student Evidences
 I can analyze and complete a flow proof involving
congruent triangles.
 I can connect the uses of triangles in real world
situations.
 I can identify congruent triangles.
 I can draw conclusions on how to prove triangles
congruent by SSS, SAS, AAS, and ASA.
 I can draw conclusions on how to prove right triangles
congruent by HL.
 I can distinguish special properties of isosceles and
equilateral triangles.
 I can perform basic transformations on the coordinate
plane with congruent triangles.
 I can recall specified vocabulary terms.
 I can distinguish different triangles by sides and
angles.
 I can determine angle measures in a triangle.
 I can …
 I can …
 I can classify angles.
Students can classify an angle as acute, obtuse, right, or
 I can determine if angles are congruent.
straight. Determine whether angles are congruent. Solve simple
 I can do 1-step algebraic equations.
one step equations. Calculate midpoint of a segment.
 I can calculate the midpoint of a segment.
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