Judge these triangle statements

Exercise and reference answers

Questions

1. Statement is true

   Yes

   Statement

   Sum of angles in any triangle is 180°.

2. Statement is true

   Yes

   Statement

   An equilateral triangle has all angles equal to 60°.

3. Statement is true

   Yes

   Statement

   The exterior angle of a triangle equals the sum of the two opposite interior angles.

4. Statement is true

   No

   Statement

   Two triangles with all three pairs of equal angles must be congruent.

Instructions

Tap true or false for each claim about triangle angles and congruent triangles.