Desmos Graphing Calculator

CalcReferenceCopy

Math·Geometry and Trigonometry·Lines, angles, and triangles

easy

In the figure shown, the length of $\overline{AB}$ is $48$. Which statement provides sufficient information to prove that triangle $ABC$ is isosceles?

A

The length of $\overline{AC}$ is $24$.

B

The length of $\overline{BC}$ is $48$.

C

The measure of angle $A$ is $70^{\circ }$.

D

The sum of the measures of angles $A,B$, and $C$ is $180^{\circ }$.