190 likes | 361 Views
Properties of Other Quadrilaterals. Students will be able to… Identify and use the properties of rectangles, squares, rhombuses, kites, and trapezoids. The following quadrilaterals have perpendicular diagonals:. Rhombus Square Kite.
E N D
Properties of Other Quadrilaterals Students will be able to… Identify and use the properties of rectangles, squares, rhombuses, kites, and trapezoids
The following quadrilaterals have perpendicular diagonals: • Rhombus • Square • Kite
The following quadrilaterals have opposite angles that are bisected: • Rhombus • Square
Example: Find the measures of the numbered angles in the rhombus. 1 12° 2 4 3
The following quadrilaterals have congruent diagonals • Rectangle • Square • Isosceles Trapezoid
EXAMPLE BD=5y-7 and AC = y + 5. Find the value of y and the length of BE. E
EXAMPLE: If BD= 2x+10 and AC=x+15, find x and the length of the diagonals.
The 2 parallel sides are the bases • The 2 non-parallel sides are the legs TRAPEZOID BASE ANGLES B D LEG LEG A C BASE ANGLES Name the following: Bases: Legs: 2 Pairs of Base Angles:
The following quadrilaterals have exactly one pair of opposite parallel sides • Trapezoid • Isosceles Trapezoid The following quadrilaterals have exactly one pair of opposite congruent sides: • Isosceles Trapezoid
Theorem: The base angles of an isosceles trapezoid are congruent B D C A Find x.
The following quadrilaterals have exactly one pair of opposite congruent angles • Kite
Example: Find the measures of the numbered angles. 46° 1 2 3
1 44° 112° 2 FIND THE MEASURE OF THE MISSING ANGLES.
2 angles that share a leg are supplementary because they are same-side interior angles.
The measure of angle A= 110. find the measures of the other 3 angles.
Midsegment (Median) of a Trapezoid • Joins the midpoints of the nonparallel sides • Is parallel to the bases • Its length is ½ the sum of the bases MN || BC MN || AD MN = ½(BC+AD)
Find the following: EF: 86° 3 4 108°
Find x: x 8 12