Transcript Geometry Lesson 4.1a

Geometry
Lesson 4.1a
Properties of Quadrilaterals
R.4.G.1 Explore and verify the properties of quadrilaterals
CGT.5.G.3 Determine, given a set of points, the type of
figure based on its properties (parallelogram, isosceles
triangle, trapezoid)
LG.1.G.6 Give justification for conclusions reached by
deductive reasoning
Discovery Lab: Quadrilaterals
• Use a protractor to measure each angle of the
following quadrilaterals. Write the measure of
each angle outside of the shape by the angle.
Quadrilaterals
I. Quadrilaterals A. Parallelograms 1. Rectangle 2. Rhombus 3. Square -
B. Trapezoid C. Kite -
Discovery Lab (Cont.)
B
A
E
S
C
X
T
W
X
I
H
E
L
E
O
V
Discovery Lab (Cont.)
• What do you notice about the angles in quadrilaterals
BASE and TWIX?
• What do you notice about the angles in quadrilaterals
CHEX and LOVE?
• Draw the diagonals for each quadrilateral. Measure
the length of each diagonal. Measure the angles
where the diagonals meet.