Sherlock Inverted

Geometry Level 2

If the $\color{#D61F06} { \text{red angle} }$ (ACB) is a right angle, which of the following claims is not necessarily true?

Sherlock Holmes inverted: "Once you eliminate the provably true, whatever remains, no matter how probable, must be the falsehood."

The

\color{#BA33D6} { \text{purple angle} }

(ACD) is a right angle The

\color{#20A900} { \text{green angle} }

(ABC) is an acute angle The

\color{#3D99F6} { \text{blue angle} }

(BAD) is a right angle More than one of these claims is not necessarily true. The

\color{#EC7300} { \text{yellow angle} }

(ADE) is an obtuse angle

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