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Home > INT2 > Chapter 5 > Lesson 5.2.5 > Problem 5-123


Lori has written the conjectures below. For each one, decide if it is true or not. If you believe it is not true, provide a counterexample (an example that proves that the statement is false).

  1. If a triangle has a angle, it must be an equilateral triangle.

    False. Provide a counterexample.

  2. To calculate the area of a shape, you always multiply the length of the base by the height.

    How do you calculate the area of a triangle?

  3. All shapes have rotation symmetry.