Question

REINFORCE Suppose “triangle”DOG congruent to “triangle ”CAT. If m of the angle D = 30° and m of the angle A = 50°, find m of the angle T. Explain your

solution.

Answer 1

Pretty sure it'd be 100°.

Since the triangles are congruent, measurement D = measurement C. This means measurement C = 30°. Also, they give us measurement A, which is 50°. Of triangle CAT, we already know two of its angles. We can add them to see the last measurement of angle T. 30° + 50° = 80°. There is 180° in a triangle, so 180° - 80° = 100°, which gives us our last measurement, T.