True or False?
A right triangle can be isosceles.
Above, a line cuts across two adjacent rectangles.
How many right triangles can you find in this diagram?
Two sides of an isosceles triangle measure 3 and 5. What could be the length of the third side?
Eli needs to draw an obtuse triangle and begins by creating a \(40^\circ\) angle. What could be the measure of the next angle he draws? (In an obtuse triangle, one angle measures more than \(90^\circ.\)
What type of triangle has both an \(89^\circ\) angle and a \(1^\circ\) angle?