Vocabulary
A shape with 3 sides, 3 angles, and 3 vertices
What is a triangle?
Name the triangle that Miss Justine draws
△ CED
A triangle with 3 equal sides and 3 equal angles
What is an equilateral triangle?
An angle that measures exactly 90 degrees
What is a right angle?
To rotate a shape around a fixed point
What is turn?
What are the three things you can do to a triangle without changing it?
Flip, turn, and slide
A triangle with 2 equal sides and 2 equal angles
What is an isoceles triangle?
A triangle that contains one angle greater than 90°
What is an obtuse triangle?
A word that means same shape, different size
What is similar?
Triangles are named based off of their ________?
What are vertices?
A triangle with no equal sides or angles
What is a scalene triangle?
A triangle that contains one 90° angle
A word that means the same shape and same size
What is congruent?
In the word 'triangle', 'tri' means
Three
True or false: the number of equal sides in a triangle is always the same as the umber of equal angles.
True
A triangle where all angles are less than 90°
What is an acute triangle?
To shrink or grow a figure, keeping the same shape but changing the size.
What is dilation?
A triangle with one right angle and 2 equal sides
What is a right isoceles triangle?
Can a triangle have 3 equal sides but only 2 equal angles?
No
Is it possible for a triangle to have more than one obtuse angle?
No