Geometry Review for 1st semester final 2022-23Franzman

Front

What is a reflection in geometry?

Back

A reflection is a transformation that flips a figure over a line, creating a mirror image.

Front

What is the result of a 90° clockwise rotation of a point (x, y)?

Back

The result is the point (y, -x).

Front

What is the sum of the interior angles of a triangle?

Back

The sum of the interior angles of a triangle is always 180°.

Front

How do you find the missing angle in a triangle?

Back

Subtract the sum of the known angles from 180°.

Front

What is an equilateral triangle?

Back

An equilateral triangle is a triangle with all three sides of equal length and all angles measuring 60°.

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 * base * height.

Front

What is the difference between scalene and isosceles triangles?

Back

A scalene triangle has all sides of different lengths, while an isosceles triangle has at least two sides of equal length.

Front

What does it mean to rotate a figure 90° counterclockwise?

Back

To rotate a figure 90° counterclockwise means to turn it left around a point by 90°.

Front

What is the definition of complementary angles?

Back

Complementary angles are two angles whose measures add up to 90°.

Front

What is the definition of supplementary angles?

Back

Supplementary angles are two angles whose measures add up to 180°.