Revision mathematics

What is formula of area of a circle?

• pi*r^2

• 2*pi*r

• 4*pi

• pi/2*r

A _______ is a symbol or group of symbols, or a word in natural language that represents a number.

Triangle with three sides of different lengths

• Scalene

• isosceles

• acute

• obtuse

one of the major themes of mathematics is

• algebra

• quantity

• change

• linear algebra

• space

How many sides does a tetrahedron have?

A direct line segment characterized by both its magnitude represented by length, and its direction

• matrix

• vector space

• vector

• algebra

Acute angle measures between 0 and 90 degrees

• true

• false

Where can we use algebra in everyday life? (name at least 3 uses)

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How do we call the angles in the picture?

• alternate interior

• corresponding

• supplementary

• alternate exterior

What is the name of that function?

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