Angles
Triangles
Vocabulary
Classifying Shapes
Lines of Symmetry
100
An angle that measures less than 90 degrees
Acute angle
100
Classify the following triangle using the ANGLES
Right triangle
100
Lines that stay the same distance from each other and never intersect (touch)
Parallel lines
100
A quadrilateral with 4 congruent sides, 4 right angles, and 2 pairs of parallel lines
Square
100
True or false: the figure below shows a line of symmetry
True
200
An angle that measures greater than 90 degrees but less than 180 degrees
Obtuse angles
200
Classify the following triangle using the SIDES
Equilateral triangle
200
Lines that intersect and form right angles
Perpendicular Lines
200
A quadrilateral with 2 pairs of congruent sides, 4 right angles, and 2 pairs of parallel lines
Rectangle
200
True or false: A line of symmetry is when a figure can be FOLDED along the line to make identical matching parts.
True
300
True or false: The measure of the following angle is 120 degrees.
False. It is 60 degrees.
300
Classify the following triangle using the SIDES
Scalene triangle
300
A point where 2 or more lines come together; also called a corner
Vertex
300
A quadrilateral with ONE pair of parallel lines
Trapezoid
300
True or false: the figure below shows a line of symmetry
False
400
The measure of the following angle
50 degrees
400
Classify the following triangle using the SIDES and ANGLES
Isosceles obtuse triangle
400
Part of a line that has 2 endpoints (seen below)
Line segment
400
A quadrilateral with 4 congruent sides AND opposite parallel sides
Rhomus
400
True or false: a square has EXACTLY TWO lines of symmetry
False. All squares have FOUR lines of symmetry.
500
The measure of the following angle
105 degrees
500
Classify the following triangle using the sides AND angles
Isosceles acute triangle
500
A straight line that starts one point and continues forever in the other direction (seen below)
Ray
500
A quadrilateral with opposite parallel sides AND opposite congruent sides
Parallelogram
500
How many lines of symmetry does the following shape have?
0