Vocabulary
Angles
Shapes
Lines
Triangles
100
A figure with one endpoint that extends forever in one direction.
Ray
100
An angle that measures less than 90°.
Acute Angle
100
A quadrilateral with exactly one pair of parallel sides.
Trapezoid
100
Two lines cross but do NOT form right angles. What are they called?
Intersecting lines.
100
A triangle with all angles less than 90°.
Acute Triangle
200
What is an angle?
Two rays that meet at a vertex.
200
An angle that measures 90°
Right Angle
200
A rectangle has how many equal sides and right angles?
Two sets of equal sides and 4 right angles.
200
Two lines that never touch.
Parallel Lines
200
Equilateral Triangle
300
A closed figure with 3 or more straight sides.
Polygon
300
Two adjacent angles measure 62° and 118°. What is their total?
180°
300
A shape has 6 equal sides and 6 equal angles. Name it.
Hexagon
300
What line goes up and down and what line goes left to right?
Vertical Line; Horizontal Line
300
2 Equal sides and 2 Equal angles
Isoceles Triangle
400
A figure has 10 sides and all sides are equal.
Decagon
400
An obtuse angle measures_____________ than 90°, but less than __________°.
Greater/More; 180°
400
A parallelogram with 4 right angles.
Rectangle
400
Lines that cross and form right angles.
Perpendicular Lines
400
No equal sides or angles.
Scalene Triangle
500
Explain the difference between a line and a line segment.
A line goes on forever in both directions; a line segment has two endpoints.
500
Two adjacent angles form a straight angle. One is 112°. What is the other?
68°
500
A square is also a rectangle. True or False?
True
500
If a vertical and horizontal line intersect, what angle do they form?
Right Angle
500
Obtuse Triangle