1.4-1.6 Review

Front

What is a convex polygon?

Back

A convex polygon is a polygon where all interior angles are less than 180 degrees, and no line segment between any two points on the boundary ever goes outside the polygon.

Front

What is a concave polygon?

Back

A concave polygon is a polygon that has at least one interior angle greater than 180 degrees, causing at least one line segment between two points on the boundary to lie outside the polygon.

Front

How many sides does a pentagon have?

Back

A pentagon has 5 sides.

Front

How many sides does a hexagon have?

Back

A hexagon has 6 sides.

Front

How many sides does an octagon have?

Back

An octagon has 8 sides.

Front

How many sides does a nonagon have?

Back

A nonagon has 9 sides.

Front

What is the midpoint formula?

Back

The midpoint formula is used to find the midpoint (M) of a line segment between two points (x1, y1) and (x2, y2): M = ((x1 + x2)/2, (y1 + y2)/2).

Front

Find the midpoint of the points (2, -6) and (-4, 2).

Back

The midpoint is (-1, -2).

Front

What are complementary angles?

Back

Complementary angles are two angles whose measures add up to 90 degrees.

Front

What are supplementary angles?

Back

Supplementary angles are two angles whose measures add up to 180 degrees.