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Home > GC > Chapter 5 > Lesson 5.1.2 > Problem 5-19
5-19.
Lori has written the conjectures below. For each one, decide if it is true or not. If you believe it is not true, find a counter example (an example that proves that the statement is false).
If a triangle has a
angle, it must be an equilateral triangle. Can a triangle have one
angle and the other angles not be ? To find the area of a shape, you always multiply the length of the base by the height.
How do you find the area of a trapezoid? Think of its formula.
All shapes have
rotation symmetry. What does it mean to have
rotation?