Lines
Angles
Shapes
Protractors
100

What starts at a point and goes forever in one direction?

A ray

100

If an angle moves all the way around the circle, how many degrees has it moved?

360

100

What type of angles does a square always have?

Right

100

What is a protractor?

A tool to measure angles

200

What type of lines cross or touch to form a right angle?

Perpendicular

200

How many degrees is a straight angle?

180

200
Does a rectangle have parallel lines, perpendicular lines, or both?

Both

200

How do you know if you should use the inside or the outside numbers on a protractor?

If the zero that the bottom ray is pointing to is on the inside, use inside. If the zero is on the outside, use the outside numbers.
300

What type of lines are across from each other and will never touch?

Parallel

300

What is the unit of measurement for angles?

Degrees

300

What shape has only one side?

Circle

300

Explain how to line up a protractor with an angle to measure it.

Put the cross on the vertex. Line up the side of the cross with the bottom ray of the angle. Make sure the arrow is pointing to zero.

400

What type of line has a point on each end?

Line segment

400
Between what two degrees does an acute angle have to be?

1 - 89

400
If a triangle has two sides that are 10 inches, and one side that is 5 inches, what kind of triangle would that be?

Isosceles

400

How many degrees are on a protractor?

180

500

What shows a location on a line, or stops a line from continuing?

Point

500

What is the point where two rays meet to form an angle called?

Vertex

500

Can a triangle have more than one obtuse angle? Why or why not?

No, because the lines would not be able to connect without adding a 4th side.

500

How would you line up a 0 degree angle on a protractor?

Both arrows would be pointing to zero

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