Geometry

Front

What does the symbol ⊥ represent in geometry?

Back

Perpendicular lines.

Front

If two angles of a triangle measure 60° and 100°, what is the measure of the third angle?

Back

20°.

Front

What are two angles that add up to 180 degrees called?

Back

Supplementary angles.

Front

How do you calculate the perimeter of a polygon?

Back

Add the lengths of all the sides.

Front

If angle ABC measures 98° and BD is an angle bisector, what are the measures of angles ABD and DBC?

Back

49° each.

Front

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

Back

180 degrees.

Front

What is the definition of complementary angles?

Back

Two angles that add up to 90 degrees.

Front

What is the formula for the area of a rectangle?

Back

Area = length × width.

Front

What is the relationship between the angles in a right triangle?

Back

One angle is 90°, and the sum of the other two angles is 90°.

Front

What is the definition of a polygon?

Back

A closed figure with three or more straight sides.