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Move and turn the protractor to fit the angle!

At {hour} o'clock, what is the angle between the hands?

What is the difference between the two angles?

About how many degrees is this angle? Estimate by eye!

A fan is opened {deg}°. How many more degrees to reach a half turn (180°)?

Make {deg}°!

Align the protractor and read the scale

Cut a pizza into {slices} equal slices — how many degrees is one slice?

How many degrees is this angle?

What is the missing angle of the quadrilateral?

What is the missing angle of the triangle?

Join the two angles — how many degrees?

Angle lab

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School Exam DB

{conversationType, select, drill_exam {Tell me the units and difficulty you want. I will help from finding problems to finishing the exam.} textbook {Tell me the units and question counts you want. I will help organize the problems and finish the workbook.} other {Tell me what you want to create. I will help from start to finish.}}

{conversationType, select, drill_exam {Shall we build a drill exam together?} textbook {Shall we build your own workbook together?} other {Shall we create something together?}}

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Problem Bank AI

Book chat

Read problems like a workbook page and ask the AI — "pick 5 easy problems" — to choose for you.

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Subject

Copy problems shared by other users into your DB for free or with credits.

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Standard analysis costs {standardCredit} credits per problem. Endnote-processed HWP/HWPX files cost only {endnoteCredit} credits per problem.

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Review and select segmented image/PDF problems or problem-solution pairs extracted from an endnote-processed HWP/HWPX file.

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Review the content and select the pairs to tag.

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Use problems from your DB to create your own exam or textbook.

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Organize DB problems into your own textbook.

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Apply your edited HWPX, cover, and contents to finish the PDF

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Write each concept page or generate a draft

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Set the textbook outline and problem order

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Continue editing the manuscript and PDF for the textbook you just organized.

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Continue with the current textbook or create one separate draft using similar database problems.

This textbook is created as a single copy. Compare the candidates for each problem and choose the ones you prefer.

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Keep the current textbook and create one copy using similar database problems.