Lines
Lines that do not intersect or meet each other at any point.
What are Parallel Lines?
An angle is called this when it is exactly 90°.
What is a Right Angle?
A 45° angle.
What is an Acute Angle?
The line segments that connect vertices.
What are Edges?
An instrument used to measure angles.
What is Protractor?
Lines that intersect each other at 90° to form a right angle.
What are Perpendicular Lines?
Angles that measure between 0° and 90°.
What are Acute Angles?
A 90° angle.
What is a Right Angle?
The point in a shape where two lines meet.
What is a Vertex?
You should always do this before measuring an angle.
What is Estimate?
Lines that cross each other at a single point.
What are Intersecting Lines?
Angles that measure between 90° and 180°.
What are Obtuse Angles?
A 173° angle.
What is an Obtuse Angle?
The flat surface of a shape.
What is a Face?
A common angle measure used as a reference point for estimating or calculating other angles.
What is Benchmark Angle?
True or False? Parallel lines will eventually cross paths.
What is False?
An angle that measures between 180° and 360°.
What is a Reflex Angle?
A 256° angle.
What is a Reflex Angle?
Two edges that meet at a right angle.
What are Perpendicular Edges?
When reading the measure of an angle on your protractor, you should always ask yourself this question.
What is "Does this make sense"?
True or False? Perpendicular lines always intersect.
What is True?
An angle that forms a straight line.
What is a Straight Angle?
A 180° angle.
What is a Straight Angle?
Faces of a 3D shape that are always the same distance apart and will never intersect, even if extended infinitely.
What are Parallel Faces?
To accurately measure an angle, you must always line up the centre of your protractor with this.
What is the vertex of the angle?