# Test: Triangles - Ambitious

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Question 1:   Find $\alpha$
$\alpha =130°$
$\alpha =140°$
$\alpha =120°$
$\alpha =110°$
Question 2:   Find $\alpha$
$\alpha =36°$
$\alpha =44°$
$\alpha =48°$
$\alpha =32°$
Question 3:   Find $\alpha$
$\alpha =102°$
$\alpha =110°$
$\alpha =111°$
$\alpha =89°$
Question 4:   Find $c$
$c=4$
$c=6$
$c=7$
$c=5$
Question 5:   Find $c$
$c=\text{6}$
Question 6:   $△ABC$ is isosceles. Find $\alpha$, where $\beta =75°$
$\alpha =30°$
$\alpha =40°$
$\alpha =60°$
$\alpha =35°$
Question 7:   Find the height of an isosceles triangle with the base $5cm$ and sides $7cm$
$h\cong \text{6}\text{.23cm}$
$h\cong \text{5}\text{.78cm}$
$h\cong \text{6}\text{.54cm}$
$h=\text{6cm}$
Question 8:   Find the area of an isosceles triangle with the base $8cm$ and sides $10cm$
$A△=23\frac{1}{3}cm$
$A△=8\sqrt{21}cm$
$A△=12.73cm$
$A△=28.13cm$
Question 9:   Find $\alpha$
$\alpha =52°$
$\alpha =46°$
$\alpha =60°$
$\alpha =53°$
Question 10:   Find the area of $△CDE$, where $△ABC$ is equilateral with the sides $6cm$
$A=\frac{2}{3}\sqrt{5}c{m}^{2}$
$A=\frac{3}{2}\sqrt{3}c{m}^{2}$
$A=3c{m}^{2}$
$A=3\frac{1}{4}c{m}^{2}$