Zralé vousatý muž učitel ve škole učebna s tabulí, geometrie. - Stock fotografie a obrázky

Mature bearded man teacher in school classroom with blackboard, geometry.

Mature bearded man teacher in school classroom with blackboard, geometry.

First day of school. pass the math exam. learning the subject. cheerful man with beard using triangle ruler. studying the measurement. formal education. male student at mathematics school lesson.

Man with beard and moustache look as businessman or teacher in college

First day of school. pass the math exam. learning the subject. cheerful man with beard using triangle ruler. studying the measurement. formal education. male student at mathematics school lesson.

Man with beard and moustache look as businessman or teacher in college or school, triangle tool.

Architecht or lecturer on math lesson. back to school. formal education. measure and size. happy mature teacher holding triangle tool. bearded man engineer work with ruler.

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Triangles only have three sides. School teacher or university student smiling with geometric triangles for geometry lesson. Happy hipster holding triangles on yellow background. Lesson in triangles.

Triangles only have three sides. School teacher or university student smiling with geometric triangles for geometry lesson. Happy hipster holding triangles on yellow background. Lesson in triangles.

What is triangle. Bearded man hold triangles isolated on white. School teacher smile with geometric triangles. Geometry lesson. Math learning. Triangles with three sides and three angles.

School of engineering. Happy engineer or designer. Smart engineer holding triangles on yellow background. Teaching engineer smiling with drawing instruments ready for working. Architectural engineer.

Leading engineer of the project. Smart engineer holding triangles on yellow background. Teaching engineer smiling with drawing instruments ready for working. Happy engineer or designer.

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For drawing, draughting and design. Hipster holding drawing instruments on yellow background. Architect and engineer using triangles for engineering drawing. Geometry or technical drawing teacher.