A geometry book is full of mathematical problems, which can be challenging and frustrating to solve. Hence, it might look sad.

The number 8 resembles a belt, so the zero is complimenting the eight on its belt.

An acute angle is a sharp angle, and pain can also be sharp. Hence, the triangle went to the doctor because it had acute pain.

The tangent function is a trigonometric function that involves angles. Hence, the math book is telling the geometry book not to bother it because it is working on its tan.

A protractor is a tool used to measure angles, and a calculator can be used to perform mathematical calculations. Hence, the calculator got a degree in mathematics to become a pro-tractor.

When a student cannot solve an equation, it is likely because they have made a mistake in their calculations or have not used the correct formula. Hence, the math teacher tells the student that they are making a mistake.

Eating homework is a humorous way of saying that the student is trying to solve it. It is a play on words, as eating is typically associated with consuming food, while solving homework is associated with completing academic work.

An acute angle is a sharp angle, and the math book is saying that the geometry book is making it feel sharp or uncomfortable. This is a humorous way of expressing the relationship between math and geometry, as geometry often involves angles and shapes.

Being on the same page is a figurative expression that means being in agreement or understanding. In this case, the math teacher and the geometry teacher are always on the same page because they both teach mathematics and share a common understanding of the subject.

Calculators are electronic devices that are used to perform mathematical calculations. Students often use calculators to help them solve math problems, especially when the calculations are complex or time-consuming.

Math books contain mathematical problems and exercises for students to solve. Hence, it is humorous to say that the math book went to the doctor because it had a problem.

Being behind is a figurative expression that means being late or lagging behind. In this case, the math teacher is telling the student that they are always late to class.

Angles are a fundamental concept in geometry, and they are often used to describe the shapes and properties of geometric figures. Hence, the math student is complimenting the geometry student on their sharp angles.

Rulers are commonly used to draw straight lines, and math teachers often use them to draw diagrams and illustrations on the board to help explain mathematical concepts to their students.

Calculators are electronic devices that are programmed to perform mathematical calculations. When a calculator gives the wrong answer, it is usually because it has been programmed incorrectly or because the user has entered the wrong information. Hence, the math student is telling the calculator that it needs to go back to school to learn how to calculate correctly.