Desmos Graphing Calculator
Math·Geometry and Trigonometry·Lines, angles, and triangles
mediumIn triangle DEF, the measure of angle D is 47∘ and the measure of angle E is 97∘. In triangle RST, the measure of angle R is 47∘ and the measure of angle S is 97∘. Which of the following additional pieces of information is needed to determine whether triangle DEF is similar to triangle RST?
A
The measure of angle F
B
The measure of angle T
C
The measure of angle F and the measure of angle T
D
No additional information is needed.