Lines
How many pairs of congruent lines and parallel lines does a parallelogram have?
Two pairs of congruent sides and two pairs of parallel lines.
How do we classify a quadrilateral?
If it is a 4-sided polygon/shape, it is a quadrilateral!
How many congruent sides does an isosceles triangle have?
Two congruent sides (two sides are equal).
Just by looking at the angle measurements, what type of triangle is this? How do you know?
An acute triangle because all of the angles are less than 90 degrees.
What quadrilateral has two pairs of parallel sides and no congruent sides?
A kite!
These 2 quadrilaterals always have 4 right angles. What are they called?
What are the square and the rectangle?
What do you call a triangle with 3 equal/congruent sides?
An equilateral triangle.
How would we classify this triangle by its angles?
A right triangle because it has an angle of exactly 90 degrees.
What are the two names I could call this 4-sided shape? BONUS DOUBLE POINTS: How many parallel lines does this shape have?
1) Quadrilateral.
2) Trapezoid.
Draw a rhombus and a parallelogram. Besides having four sides, what do both these quadrilaterals have in common?
They both have two pairs of equal/congruent lines.
They both have two pairs of parallel lines.
They both have zero right angles.
This birthday hat has 2 sides that are equal. What type of triangle is it?
An isosceles triangle.
How would we classify this triangle by its angles and why?
It is an obtuse triangle because one of its angles is greater than 90 degrees.
What kind of quadrilateral only has one pair of parallel lines?
Trapazoid.
There are the two names we could call this 4-sided shape. What are they?
1) Quadrilateral.
2) Parallelogram.
This triangle has no equal sides. What kind of triangle is it?
A scalene triangle.
Classify this triangle based on its angles. BONUS DOUBLE POINTS: Name the triangle based on its angles AND sides.
A right isosceles triangle.
How many pairs of parallel lines does a hexagon have?
3 pairs of parallel lines.
Name four types of polygons we learned about today!
Possible answers: Triangle, quadrilateral, square, rectangle, parallelogram, rhombus, trapezoid, kite.
How we would classify this triangle by its sides?
An isosceles triangle (two equal sides).
DOUBLE POINTS: What type of triangle is this based on its angles AND sides?
Scalene acute triangle.