Geometry Proofs Task Cards

Math Giraffe
21.5k Followers
Grade Levels
9th - 11th
Subjects
Standards
Formats Included
  • Zip
Pages
25 plus answer keys & instructions
$4.00
$4.00
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Math Giraffe
21.5k Followers

Description

Proof Writing in High School Geometry (Two-Column Proofs):

This versatile set of 12 geometry proof problems can be used in many ways.

You get the set of 12 proof problems in two formats : one with a two-column table set up for recording, and one without. A student recording sheet is included as well. Answer keys are included, but there may be other possible approaches to some proofs.

Option 1: Print one set of task cards and laminate them. Print a “recording sheet” for each student. They can work in small teams or rotate through stations to complete tasks.

Option 2: Print multiple cards per page to create worksheets for student practice.

Option 3: One proof at a time can be projected for full-class practice.

Option 4: Use an assortment of proofs to create an assessment.

Concepts Used in Justifications for Proofs in this set (prior knowledge required):

Bisectors

Supplementary angles

Linear pairs

Vertical angles

Reflexive property

Symmetric property

Transitive property

Angle Addition Postulate

Segment Addition Postulate

Corresponding angles Postulate

Alternate interior angles Theorem

Alternate exterior angles Theorem

Same-side interior angles Theorem

Same-side exterior angles Theorem

“Right angles are congruent”

“Base angles of Isosceles triangles are congruent”

SAS

SSS

AAS

ASA

HL

CPCTC

(+ converses of any of the above where applicable)

See preview for views of the two formats of task cards and some samples. The zip file contains PDF files.

Check out a full unit - teaching proofs from the very beginning:

Proofs: Full Unit

For more task cards, try:

Algebra In Geometry Task Cards: Finding Missing Angle Measures

Task Cards: Slopes of Parallel and Perpendicular Lines

For more great high school Geometry resources, try:

Lesson Pack: Transversals

Quadrilaterals Proofs

Total Pages
25 plus answer keys & instructions
Answer Key
Included
Teaching Duration
2 days
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Standards

to see state-specific standards (only available in the US).
Prove theorems about parallelograms.
Prove theorems about triangles.
Prove theorems about lines and angles.

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