IM1 Unit3 Properties of Triangles and Transformations

Front

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

Back

180 degrees.

Front

Define congruent figures.

Back

Figures that have the same size and shape.

Front

What is the measure of the missing angle if one angle is 82 degrees and another is 55 degrees?

Back

43 degrees.

Front

Solve for x: 2x + 3 = -11.

Back

x = -7.

Front

What is a transformation in geometry?

Back

A change in the position, size, or shape of a figure.

Front

What is the definition of similar triangles?

Back

Triangles that have the same shape but not necessarily the same size.

Front

What is the Pythagorean theorem?

Back

In a right triangle, a² + b² = c², where c is the hypotenuse.

Front

What is an acute angle?

Back

An angle that measures less than 90 degrees.

Front

What is a right angle?

Back

An angle that measures exactly 90 degrees.

Front

What is a reflex angle?

Back

An angle that measures more than 180 degrees but less than 360 degrees.