THEOREM: If a quadrilateral is an isosceles trapezoid, the diagonals are congruent. … THEOREM: If a quadrilateral is a kite, the diagonals are perpendicular. THEOREM: If a quadrilateral is a kite, it has one pair of opposite angles congruent.
Are the diagonals of a kite equal?
The diagonals are perpendicular. (Thus the kites are exactly the quadrilaterals that are both tangential and orthodiagonal.) The two line segments connecting opposite points of tangency have equal length. One pair of opposite tangent lengths have equal length.
What parts of a kite are congruent?
The Properties of a Kite
- Two disjoint pairs of consecutive sides are congruent by definition. …
- The diagonals are perpendicular.
- One diagonal (segment KM, the main diagonal) is the perpendicular bisector of the other diagonal (segment JL, the cross diagonal). …
- The main diagonal bisects a pair of opposite angles (angle K and angle M).
Does a kite have 4 congruent angles?
Your quadrilateral would be a kite (two pairs of adjacent, congruent sides) and a rhombus (four congruent sides). Some (but not all) kites are rhombi. If your kite/rhombus has four equal interior angles, you also have a square.
Are the diagonals of a parallelogram congruent?
The diagonals of a parallelogram are sometimes congruent. The diagonals of a rhombus are always perpendicular. The consecutive angles of a parallelogram are never complementary. A square is always a rhombus.
What are the 4 properties of a kite?
Kite properties include (1) two pairs of consecutive, congruent sides, (2) congruent non-vertex angles and (3) perpendicular diagonals. Other important polygon properties to be familiar with include trapezoid properties, parallelogram properties, rhombus properties, and rectangle and square properties.
What are the five properties of kite?
- Opposite sides are parallel and equal in length.
- Opposite angles are equal in measure.
- Adjacent angles sum up to 180 degrees.
- It has 2 diagonals that bisect each other.
- Each diagonal divides the parallelogram into 2 congruent triangles.
Can a kite have 2 right angles?
Thus the right kite is a convex quadrilateral and has two opposite right angles. If there are exactly two right angles, each must be between sides of different lengths. All right kites are bicentric quadrilaterals (quadrilaterals with both a circumcircle and an incircle), since all kites have an incircle.
How do you prove a kite?
How to Prove that a Quadrilateral Is a Kite
- If two disjoint pairs of consecutive sides of a quadrilateral are congruent, then it’s a kite (reverse of the kite definition).
- If one of the diagonals of a quadrilateral is the perpendicular bisector of the other, then it’s a kite (converse of a property).
Are opposite sides of a kite equal?
In a kite, two adjoining sides are equal as shown in the figure. … Two pairs of sides known as consecutive sides are equal in length. One pair of diagonally opposite angles is equal in measurement. These angles are said to be congruent with each other.
What does congruent mean?
Congruent means same shape and same size. So congruent has to do with comparing two figures, and equivalent means two expressions are equal. So to say two line segments are congruent relates to the measures of the two lines are equal.
Does a rectangle have 4 congruent sides?
A rectangle is a quadrilateral because it has four sides, and it is a parallelogram because it has two pairs of parallel, congruent sides. … Like a square, a rhombus has four congruent sides and pairs of congruent angles opposite each other. However, right angles are not required for a rhombus.
Does a rhombus have 4 right angles?
A rhombus is defined as a parallelogram with four equal sides. Is a rhombus always a rectangle? No, because a rhombus does not have to have 4 right angles.
How do you prove that diagonals are congruent?
The first way to prove that the diagonals of a rectangle are congruent is to show that triangle ABC is congruent to triangle DCB. Since ABCD is a rectangle, it is also a parallelogram. Since ABCD is a parallelogram, segment AB ≅ segment DC because opposite sides of a parallelogram are congruent.
Are diagonals of rhombus equal?
The diagonals of a rhombus intersect at equal angles, while the diagonals of a rectangle are equal in length. The figure formed by joining the midpoints of the sides of a rhombus is a rectangle, and vice versa.
How do you know if diagonals bisect each other?
In any parallelogram, the diagonals (lines linking opposite corners) bisect each other. That is, each diagonal cuts the other into two equal parts.