Unit 1 Review

Front

If m∡VYT = 5(x+3)°, find the value of x so that line TX ⟂ line VY.

Back

x = 15°.

Front

How many planes are in the figure?

Back

There are 5 planes.

Front

Name three points coplanar with point R.

Back

Points X, Y, W are coplanar with point R.

Front

In the diagram, rays FA and FE are opposite rays and ray FD bisects ∡EFC. If m∡CFD = (8x-13)° and m∡CFE = (14x-2)°, find the m∡CFD.

Back

m∡CFD = 83°.

Front

Find the coordinates of the midpoint, E, of line segment DF if D (-15, 4) and F (2, -10).

Back

E (-6.5, -3).

Front

What is the definition of a plane in geometry?

Back

A plane is a flat, two-dimensional surface that extends infinitely in all directions.

Front

What does it mean for two lines to be perpendicular?

Back

Two lines are perpendicular if they intersect at a right angle (90°).

Front

What is the midpoint formula?

Back

The midpoint M of a segment with endpoints (x1, y1) and (x2, y2) is M = ((x1+x2)/2, (y1+y2)/2).

Front

What are opposite rays?

Back

Opposite rays are two rays that share the same endpoint and extend in opposite directions.

Front

What is the definition of coplanar points?

Back

Coplanar points are points that lie on the same plane.