Geometry

Front

What does the symbol ⊥ represent in geometry?

Back

Perpendicular lines.

Tags

CCSS.4.G.A.1

CCSS.HSG.CO.A.1

Front

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

Back

20°.

Tags

CCSS.8.G.A.5

Front

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

Back

Supplementary angles.

Tags

CCSS.7.G.B.5

Front

How do you calculate the perimeter of a polygon?

Back

Add the lengths of all the sides.

Tags

CCSS.3.MD.D.8

Front

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

Back

49° each.

Tags

CCSS.HSG.CO.C.9

Front

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

Back

180 degrees.

Tags

CCSS.8.G.A.5

Front

What is the definition of complementary angles?

Back

Two angles that add up to 90 degrees.

Tags

CCSS.7.G.B.5

Front

What is the formula for the area of a rectangle?

Back

Area = length × width.

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

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°.

Tags

CCSS.8.G.A.5

Front

What is the definition of a polygon?

Back

A closed figure with three or more straight sides.

Tags

CCSS.2.G.A.1