Geometry Semester 1 Review

Front

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

Back

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

Front

What is the definition of corresponding angles?

Back

Corresponding angles are angles that are in the same position on two parallel lines cut by a transversal.

Front

What is the definition of alternate interior angles?

Back

Alternate interior angles are angles that are on opposite sides of the transversal and inside the two parallel lines.

Front

What is the definition of alternate exterior angles?

Back

Alternate exterior angles are angles that are on opposite sides of the transversal and outside the two parallel lines.

Front

What is the value of x if m∠A + m∠B + m∠C = 180° and m∠A = 50°, m∠B = 80°?

Back

x = 50°.

Front

What is the definition of vertical angles?

Back

Vertical angles are the angles opposite each other when two lines intersect. They are always equal.

Front

What is the formula for the area of a triangle?

Back

Front

What is the definition of a transversal?

Back

A transversal is a line that intersects two or more lines at different points.

Front

What is the relationship between the angles formed by a transversal and parallel lines?

Back

When a transversal intersects parallel lines, corresponding angles are equal, alternate interior angles are equal, and consecutive interior angles are supplementary.

Front

What is the definition of supplementary angles?

Back

Supplementary angles are two angles whose sum is 180°.