IM Geometry Unit 2

Front

What is a parallelogram?

Back

A parallelogram is a four-sided figure (quadrilateral) with opposite sides that are parallel and equal in length.

Front

What can be concluded if a parallelogram has one right angle?

Back

If a parallelogram has one right angle, then all angles are right angles, and it is a rectangle.

Front

What is the property of opposite angles in a parallelogram?

Back

Opposite angles in a parallelogram are congruent.

Front

What does it mean for two figures to be congruent?

Back

Two figures are congruent if they have the same shape and size, meaning all corresponding sides and angles are equal.

Front

What is the significance of corresponding parts in congruent figures?

Back

Corresponding parts of congruent figures are congruent, meaning that if two figures are congruent, their corresponding sides and angles are equal.

Front

What is a rigid motion in geometry?

Back

A rigid motion is a transformation that preserves distance and angle measures, such as translation, rotation, and reflection.

Front

How do you perform a reflection across a line?

Back

To reflect a figure across a line, each point of the figure is mapped to a point on the opposite side of the line, equidistant from the line.

Front

What is the definition of an isosceles triangle?

Back

An isosceles triangle is a triangle that has at least two sides of equal length, which also means the angles opposite those sides are equal.

Front

How do you find the measure of an angle in a triangle?

Back

The sum of the interior angles in a triangle is always 180 degrees. You can find an unknown angle by subtracting the sum of the known angles from 180 degrees.

Front

What is the relationship between angles in isosceles triangles?

Back

In an isosceles triangle, the angles opposite the equal sides are also equal.