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  • Geometry
  • Triangles
  • Isosceles triangle

Isosceles triangle

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  • Question 1:
    1 pts
    		Find the value of $x.$
    $8cm$
    $7cm$
    $4cm$
    $2cm$
  • Question 2:
    1 pts
    		Find the value of $x.$
    $x=$
  • Question 3:
    1 pts
    		In an isosceles triangle, the angles across from the congruent sides are congruent. Also the sides across from congruent angles are congruent.
  • Question 4:
    1 pts
    		Find the value of $y.$
    $y=90^{\circ}$
    $y=60^{\circ}$
    $y=45^{\circ}$
    $y=30^{\circ}$
  • Question 5:
    2 pts
    		Find the value of $x$ and $y.$
    $x$ and $y$ are, respectively, equal to
  • Question 6:
    2 pts
    		What is the lateral side of an isosceles triangle with area $20$ unit$^{2}$ and base $10$ units?
    $b=\sqrt{21}$
    $b=\sqrt{31}$
    $b=\sqrt{41}$
    $b=\sqrt{51}$
  • Question 7:
    2 pts
    		What is the area of an isosceles triangle with base $b$ of $8 cm$ and lateral $a$ side $5 cm?$
    Area $=$
  • Question 8:
    2 pts
    		$x=70^{\circ}$ and $y=5.$
  • Question 9:
    3 pts
    		What is the lateral side of an isosceles triangle such that its height $h$ ( perpendicular to its base $b$) is $4 cm$ shorter than its base $b$ and its area is $30 cm^{2}$?
    $a=$
  • Question 10:
    3 pts
    		$\vartriangle ABC$ and $\vartriangle BCD$ are isosceles triangles. Find the size of angle $BDE$.
    $\measuredangle BDE =$
  • Question 11:
    3 pts
    		$\vartriangle ABC$ and $\vartriangle CDE$ are isosceles triangles. Find the size of angle $CED$.
    $\measuredangle CED =$
  • Question 12:
    3 pts
    		$\vartriangle ABC$ is a triangle whose $AB=AC =20cm$ and angle $BAC=30$ degree. Which expression can be used to find the area of the triangle?
    Area $=$

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