Final: Two Moves, One Rule

Part of the Transformations & Constructions section of Coddy's Geometry journey. Lesson 58 of 61.

Triangle ABC was turned 90° counterclockwise about the origin and then reflected in the x-axis. Its final image is drawn on the grid. Write one rule that does both moves at once.

Challenge

ABC and its final image are drawn on the grid. Write the rule (x, y) → (?, ?) that takes ABC onto it, then press Check.

Try it yourself

$Move the shape onto its target$

Move the shape onto its target

Test yourself

This lesson includes a short quiz. Start the lesson to answer it and track your progress.

All lessons in Transformations & Constructions

1Translations

Sliding a Shape Draw the Image Image Coordinates The Translation Rule Recap: Translations

4Combining Moves

One Move, Then Another Order Matters Two Mirrors Name the Move Recap: Combining Moves

7Drawing on Squared Paper

Lengths by Pythagoras Perpendicular Steps Squares by Area Right Triangles by Area Midpoints on the Grid Recap: Squared Paper

10Perpendiculars and Parallels

Perpendicular From a Point Perpendicular at a Point Parallel Through a Point Tools You Have Earned Recap: Parallels

3Rotations

Turning About a Point The Half Turn Quarter-Turn Rules A Center Off the Origin Recap: Rotations

6Symmetry

Lines of Symmetry Rotational Symmetry Regular Polygons Symmetry Is a Move Recap: Symmetry

9Bisectors

The Perpendicular Bisector The Midpoint Bisecting an Angle Half of 60°Recap: Bisectors

12Final Challenges

Final: FootprintsFinal: Two Moves, One RuleFinal: Mirror on the Grid Final: The Fair Well Final: The Tangent Road