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27 Cards in this Set
 Front
 Back
I am the side opposite the right angle in a right triangle.
What am I? 
I am the hypotenuse of a right triangle.


I am a triangle with three equal (congruent) sides and three equal (congruent) angles.
What am I? 
I am an equilateral triangle.


I am the point of intersection of the three axes of a triangle.
What am I? 
I am the circumcenter of a triangle.


I am any one side of the triangle. Usually I am the side the triangle is resting upon.
What am I? 
I am the base of the triangle.


I am the point of intersection of the three altitudes of a triangle.
What am I? 
I am the orthocenter of a triangle.


I am a perpendicular line drawn through the midpoint of a side.
What am I? 
I am the axis of a triangle.


I am a triangle in which the two equal sides form a right angle.
What am I? 
I am an isosceles rightangled triangle.


I am formed by two sides drawn from a common endpoint. A triangle has three of me.
What am I? 
I am the angle of the triangle.


I am the point of intersection of the three bisectors of a triangle.
What am I? 
I am the incenter of a triangle.


I am the plane limited by the sides of the triangle.
What am I? 
I am the area of the triangle.


We are the sides of a right triangle that form the right angle.
What are we? 
We are the legs of a right triangle.


I am the line drawn from any one vertex of a triangle to the midpoint of the opposite side.
What am I? 
I am the median of a triangle.


I am the point at which the medians intersect.
Wht am I? 
I am the centroid of a triangle.


I am a triangle that has three angles that measures between zero degree and 90 degrees.
What am I? 
I am an acute triangle.


I am a triangle with no equal sides and a right angle.
What am I? 
I am a scalene rightangled triangle.


I am a triangle with no equal sides and an obtuse angle.
What am I? 
I am a scalene obtuseangled triangle.


I am a triangle with no equal sides and all acute angles.
What am I? 
I am a scalene acuteangled triangle.


I am the distance around the triangle.
What am I? 
I am the perimeter of a triangle.


I am a triangle with two equal (congruent) sides.
What am I? 
I am an isosceles triangle.


I am a triangle with two equal sides and all acute angles.
What am I? 
I am an isosceles acuteangled triangle.


We are the line segments that form the triangle.
What are we? 
We are the sides of the triangle.


I am a triangle that has one angle that measures exactly 90 degrees.
What am I? 
I am a right triangle.


I am a triangle with no equal (congruent) sides.
What am I? 
I am a scalene triangle.


I am the common endpoint of two sides. A triangle has three of me.
What am I? 
I am the vertex of a triangle. When there are more than one of me, we are called vertices.


I am a triangle that has one angle that measures between 90 degrees and 180 degrees.
What am I? 
I am an obtuse triangle.


I am the line from any one vertex drawn perpendicular to the opposite side, extended if necessary.
What am I? 
I am the altitude of a triangle.


I am a triangle in which the two equal sides form an obtuse angle.
What am I? 
I am an isosceles obtusedangled triangle.
