triangles
what is an obtuse triangle?
An obtuse triangle has one obtuse angle and two acute
what shapes have four right angles
rectangle, square
what shape has 8 sides
octagon
what is a right angle?
90 degrees
how many side does a quadrilateral have?
4 sides.
what is an acute triangle?
An acute triangle has 3 acute angles.
what shape's angles all add up to 180 degrees?
triangle
how many side does a nonagon
9
what is an acute angle
an angle that is less than 90 degrees
a quadrilateral that has 4 equal sides.
a square
what is a right triangle?
a right triangle has one right angle and two acute angles.
how many side does a decagon have
10
how many sides does a dodecagon
12
what is an obtuse angle?
an angle that is more than 90 degrees
a quadrilateral that has opposite sides parallel and 4 right angles.
rectangle
what is an isosceles triangle?
an isosceles triangle has at least two side congruent.
what shape has 6 sides.
hexagon.
how many sides does a heptagon
7
what angles are in a octagon?
obtuse
a quadrilateral that has one pair of parallel lines and 2 obtuse angles and 2 acute angles
TRAPEZOID
what is a scalene triangle?
a scalene triangle has no side congruent.
what shape has 5 sides
pentagon
how many side does a trapezoid have
4
what angles are in a rectangle
right
a quadrilateral with 4 equal sides and 2 obtuse angles and 2 acute angles.
rhombus