Use the properties of similar triangles to determine measures (cos, sin, tan, lengths, angles) Geometry

Given that ABC and DEF are similar, determine \alpha.

\widehat{a}=45°

\widehat{a}=50^\circ

\widehat{a}=85^\circ

\widehat{a}=35^\circ

Given that ABC and ADE are similar, determine a.

a=2

a=3

a=\dfrac{3}{2}

a=9

Given that ABC and ADE are similar, determine a.

a=13

a=15

a=16

a=18

Given that ABC and ADE are similar, determine a.

a=7.5

a=6

a=3.75

a=9

Given that ABC and DEF are similar, determine a.

a=12

a=5

a=16

a=18

Given that ABC and BDA are similar, determine a.

a=\sqrt{5}

a=5

a=6

a=\sqrt{8}

Given that ABC and ABD are similar, determine a.

a= \sqrt{80}

a= \sqrt{60}

a= \sqrt{50}

a=10