What kind of lines meet to form a 90 degree angle?
perpendicular lines
What type of angle is less than 90 degrees?
acute angles
How many lines of symmetry does this shape have?
five lines of symmetry
Which figures below are not right triangles?
How many pairs of parallel lines does this shape have?
none, all of the lines will intersect
These lines never meet. They stay the same distance apart and never intersect
parallel lines
What type of angle matches the degree given?
146 degrees
obtuse
How many lines of symmetry does an isosceles triangle have?
one line of symmetry
What triangle has the following attributes?
No equal sides
Two acute angles
No lines of symmetry
Scalene triangle
How many pairs of parallel lines does the figure have?
The shape has 4 pairs of parallel lines
True or False:
A shape can not have both parallel and perpendicular lines – Explain
False – a square has sides that form right angles
How many right angles does this triangle have?
none, this is an equilateral triangle
How many lines of symmetry does this shape have?
6 lines of symmetry
What triangle has the following attributes?
All angles are acute
All sides are equal
3 lines of symmetry
Equilateral triangle
How many right angles does the shape have?
this shape has 8 right angles
What kind of lines are shown?
intersecting
What types of angle is indicated in the triangle?
right angle
Define symmetry
a line that evenly divides a shape
Which triangle has the following attributes?
2 equal sides
All acute angles
One line of symmetry
isosceles triangle
Where does the figure below have a line of symmetry?
The star has a line of symmetry right down the center of the shape. There are 5 of them.
What type of lines are shown?
perpendicular lines
What is the degree range for an acute angle?
0 to 89 degrees
How many lines of symmetry does an equilateral triangle have?
three lines of symmetry
What triangle is pictured below?
Isosceles triangle
Does the figure below have a line of symmetry? Explain how you know.
Yes, it has three.
The figure shown is an equilateral triangle.