Angles
what is an angle that is less than 90 degrees
acute angle
what are two lines that will never intersect and are the same distance apart
parallel lines
what type of triangle has all sides the same
equilateral
draw a heart. does this shape have any lines of symmetry? where?
yes
a right angle has this measure
What is 90 degrees?
two lines that cross to make acute and obtuse angles are called what?
intersecting lines
What is the triangle called that has an angle measure greater than 90 degrees
obtuse
draw a square. does this shape have any lines of symmetry? where?
yes
an angle that measures 180 degrees is called what
straight angle
what are perpendicular lines?
two lines that intersect to make right angles
a triangle with three different sides
scalene
draw a cloud. does this shape have any lines of symmetry? where?
no
an angle that has a measure < 90 degrees is called what?
obtuse angle
(perpendicular lines)
Draw a picture of an isosceles triangle. What do the sides of an isosceles triangle have?
two equal sides
draw a chair. does this shape have any lines of symmetry? were?
four right angles meeting at a center point make an angle of how many degrees?
360 degrees
draw parallel lines and draw intersecting lines, what are the differences?
parallel lines never meet and are the same distance apart, intersecting lines will eventually meet
Draw an obtuse and an acute triangles, explain what the angles are
obtuse: angles greater than 90 degrees
acute: angles less than 90 degrees
draw a circle. does this shape have any lines of symmetry? where?
yes. infinite!