This lesson shows students how to write angle proofs modeled on the logic word puzzles we did in the last lesson. They use three or four defined rules to go from the "given" to the "prove".
Vertical Angle Theorem (V.A.T.): Vertical angles are congruent. Triangle Sum Theorem: The three angles of a triangle sum to 180° Linear Pair Theorem: If two angles form a linear pair then they are adjacent and are supplementary. Third Angle Theorem: If two angles of one triangle are congruent to two angles of another triangle, then the third
OBJ: 6-2.1 Properties: Sides and Angles NAT: NAEP 2005 G3f STA: PA 2.9.C TOP: 6-2 Example 1 KEY: parallelogram | consectutive angles 6. ANS: B PTS: 1 DIF: L2 REF: 6-2 Properties of Parallelograms OBJ: 6-2.1 Properties: Sides and Angles NAT: NAEP 2005 G3f STA: PA 2.9.C TOP: 6-2 Example 2
Two-Column Proofs Practice Tool. Select a proof from the list below to get started. To see and record your progress, log in here.
2-8 Proving Angle Relationships - Practice and Problem ... Chapter 2 - Reasoning and Proof - Standardized Test Practice - Cumulative, Chapters 1-2 1.
the Proof Puzzle BLM. Additional proofs may need to be created if the class has a large number of students or for additional practice. If students are given the statements and reasons in separate envelopes, more proofs should be created for this activity until students can sort out the statements and reasons on their own. This activity forces
Practice: Line and angle proofs. Next lesson. Sal's old angle videos. Video transcript. We know that if we have two lines that are parallel-- so let me draw those two ...
Welcome to McDougal Littell's Test Practice site. This site offers multiple interactive quizzes and tests to improve your test-taking skills. Select one of the links below to get started. Lesson Quiz.
A geometric proof involves writing reasoned, logical explanations that use definitions, axioms, postulates, and previously proved theorems to arrive at a conclusion about a geometric statement. A good proof has an argument that is clearly developed with each step supported by: Theorems: statements that can be proved to be true