Gr 9 MATH: Ch9 Sum Geometry of 2D Shapes and Construction of Geometric Figures

<p>Right triangle</p> Signup and view all the answers

<p>P = 2(l + w)</p> Signup and view all the answers

<p>Parallelogram</p> Signup and view all the answers

<p>A = \pi r^2</p> Signup and view all the answers

<p>Sector</p> Signup and view all the answers

<p>A = θ/360 × πr^2</p> Signup and view all the answers

<p>1200°</p> Signup and view all the answers

<p>A = 1/4 ns^2 cot(π/n)</p> Signup and view all the answers

<p>Draw two circles with the end points of the line segment as centers and passing through the given point.</p> Signup and view all the answers

<p>Draw a circle with the vertex of the angle as the center and marking off equal lengths on both arms of the angle.</p> Signup and view all the answers

<p>90°</p> Signup and view all the answers

<p>Two triangles are congruent if they have the same shape and size.</p> Signup and view all the answers

<p>Two sides and one angle</p> Signup and view all the answers

<p>The three angle bisectors of a triangle intersect at one point, equidistant from each side of the triangle.</p> Signup and view all the answers

<p>The exterior angle of a triangle is equal to the sum of the interior opposite angles.</p> Signup and view all the answers

<p>Three sides or three angles</p> Signup and view all the answers

<p>A = 1/2 × base × height</p> Signup and view all the answers

<p>One side and one angle</p> Signup and view all the answers

<p>P = 2(l + w)</p> Signup and view all the answers

<p>A = πr^2</p> Signup and view all the answers

<p>Draw the base, use a protractor to measure the given angle, then draw the other side and connect the vertices.</p> Signup and view all the answers

<p>Sum = (n - 2) × 180°</p> Signup and view all the answers

<p>A = θ/360 × πr^2</p> Signup and view all the answers

<p>Use a compass to draw four equal sides from a single vertex, ensuring all sides are the same length.</p> Signup and view all the answers

<p>d = √(l^2 + w^2)</p> Signup and view all the answers

<p>Equilateral Triangle</p> Signup and view all the answers

<p>6</p> Signup and view all the answers

<p>5.83 cm</p> Signup and view all the answers

<p>Incenter</p> Signup and view all the answers

<p>The triangles are congruent</p> Signup and view all the answers

<p>8.38 cm^2</p> Signup and view all the answers

<p>The triangles are congruent</p> Signup and view all the answers

<p>3.94 cm</p> Signup and view all the answers

<p>Angle Bisector</p> Signup and view all the answers

<p>The exterior angle</p> Signup and view all the answers

<p>Regular Polygon</p> Signup and view all the answers

<p>A = b * h</p> Signup and view all the answers

<p>Parallelogram</p> Signup and view all the answers

<p>180^\circ</p> Signup and view all the answers

<p>C = 2 * pi * r</p> Signup and view all the answers

<p>Isosceles Triangle</p> Signup and view all the answers

<p>A = 1/2 * (a + b) * h</p> Signup and view all the answers

<p>Rhombus</p> Signup and view all the answers

<p>RHS</p> Signup and view all the answers

<p>A = (a + b) * h / 2</p> Signup and view all the answers

<p>All of the above</p> Signup and view all the answers

<p>P = n * s</p> Signup and view all the answers

<p>Circle</p> Signup and view all the answers

<p>L = θ / 360 * 2πr</p> Signup and view all the answers

<p>ASA</p> Signup and view all the answers

<p>A = b * h</p> Signup and view all the answers

<p>They intersect at the incenter</p> Signup and view all the answers

<p>Sum = (n - 2) * 180</p> Signup and view all the answers

<p>All sides are equal</p> Signup and view all the answers

<p>Opposite sides are equal and parallel</p> Signup and view all the answers

<p>A = (θ/360) × πr^2</p> Signup and view all the answers

<p>Equilateral triangle</p> Signup and view all the answers

<p>Two pairs of congruent sides and one pair of congruent angles</p> Signup and view all the answers

<p>C = 2πr</p> Signup and view all the answers

<p>Two sides are equal</p> Signup and view all the answers

<p>P = 2l + 2w</p> Signup and view all the answers

<p>One side and two angles</p> Signup and view all the answers

<p>A = sqrt(s(s - a)(s - b)(s - c))</p> Signup and view all the answers

<p>Draw the base and use a protractor to measure the given angle, then draw the other side and connect the vertices</p> Signup and view all the answers

<p>P = n * s</p> Signup and view all the answers

<p>Two sides and an angle not included</p> Signup and view all the answers

<p>A = b * h</p> Signup and view all the answers

<p>Use a compass to draw a circle with a given radius from a central point</p> Signup and view all the answers

<p>A = (θ / 360) * π * r^2</p> Signup and view all the answers

<p>Two angles and an included side</p> Signup and view all the answers

<p>C = 2 * π * r</p> Signup and view all the answers

<p>The area of a sector is directly proportional to the angle of the sector.</p> Signup and view all the answers

<p>Three sides</p> Signup and view all the answers

<p>π cm</p> Signup and view all the answers

<p>160 cm^2</p> Signup and view all the answers

<p>The exterior angle is equal to the sum of the interior opposite angles.</p> Signup and view all the answers

<p>The included angle must be congruent.</p> Signup and view all the answers

<p>P = ns</p> Signup and view all the answers

<p>Incenter</p> Signup and view all the answers

<p>Drawing an equilateral triangle and bisecting one of its angles</p> Signup and view all the answers

<p>The diagonal is equal to the square root of the sum of the squares of the sides.</p> Signup and view all the answers

<p>Rhombus</p> Signup and view all the answers

<p>180°</p> Signup and view all the answers

<p>P = 4s</p> Signup and view all the answers

<p>Irregular Polygon</p> Signup and view all the answers

<p>A = πr^2</p> Signup and view all the answers

<p>Right Triangle</p> Signup and view all the answers

<p>C = 2πr</p> Signup and view all the answers

<p>Rectangle</p> Signup and view all the answers

<p>SSS, SAS, ASA, and RHS</p> Signup and view all the answers

<p>A = (1/2) × base × height</p> Signup and view all the answers

<p>P = a + b + c + d</p> Signup and view all the answers

<p>A = πr^2</p> Signup and view all the answers

<p>C = 2πr</p> Signup and view all the answers

<p>A = (θ/360) × πr^2</p> Signup and view all the answers

<p>$A = rac{ heta}{360} imes \pi r^2$</p> Signup and view all the answers

<p>Use a protractor to measure the given angle, then draw the other side and connect the vertices.</p> Signup and view all the answers

<p>$P = ns$</p> Signup and view all the answers

<p>P = ns</p> Signup and view all the answers

<p>Bisecting a 90 angle</p> Signup and view all the answers

<p>Use a compass to draw four equal sides from a single vertex, ensuring all sides are the same length.</p> Signup and view all the answers

<p>They intersect at a point equidistant from each side of the triangle</p> Signup and view all the answers

<p>A = b × h</p> Signup and view all the answers

<p>$L = rac{ heta}{360} imes 2 \pi r$</p> Signup and view all the answers

<p>All corresponding sides and angles are equal</p> Signup and view all the answers

<p>Two pairs of congruent sides and the included angles are congruent</p> Signup and view all the answers

<p>The exterior angle is equal to the sum of the interior opposite angles</p> Signup and view all the answers

<p>$A = rac{1}{4} n s^2 \cot(rac{\pi}{n})$</p> Signup and view all the answers

<p>Drawing a circle with one end point of the line segment as the center and passing through the given point</p> Signup and view all the answers