Chapter 8 Warm ups

Geometric Figures

8-1 Building Blocks of Geometry

What geometry term might you associate with each object

1.One edge of a cardboard box

2.The floor

3.The tip of a pen

8-2 Classifying Angels

Draw Each Figure

1.Line Segment

2.Line

3.Ray

4.Plane

8-3 Angle Relationship

Find the complement of each angle measure.

1. 30° 2. 42°

Find the supplement of each angle measure.

3. 150° 4. 82°

8-4 Properties of Circles

1. Two angles are supplementary. One angle measures 61°. Find the measure of the other angle.

2. Two angles are complementary. One angle measures 19°. Find the measure of the other angle.

3. Two angles are supplementary and congruent. Find the measure of each angle.

8-5 Classifying Polygons

1.How do you name a ray?

2.What is the measure of an obtuse angle?

3.How do you name a line?

4.What is true about a supplmentary?

8-6 Classifying Triangles

1.What is the name of a 6 sided figure?

2.What is the difination of an acute angle?

3.The measure of one two supplementary Angles is 32 degrees. What is the measure of the other angle?

8-7 Classifying Quadrilaterals

Identify the triangle based on the given measurements.

1. 3 ft, 4 ft, 6 ft

2. 46°, 90°, 44°

3. 7 in., 7 in., 10 in.

8-8 Angles in Polygons

Solve

1. 72 + 18 + x =180

2. 80 + 70 + x = 180

3. x + 42 + 90 = 180

4. 120 + x + 32 = 180

8-9 Congruent Figures

• Find the measure of the third angle in the triangle, given two angle measures.

• 1. 58°, 104°

• 2. 32°, 63°

• 3. 90°, 38°

• 4. 42°, 88°

8-10 Translation, Reflection, and Rotation

Warm Up

1. Subtract 3 from the x-coordinate and 2 from the y-coordinate in (7, –4).

2. Multiply each coordinate by 3 in (4, 9).

3. Subtract 4 from the x-coordinate and add 3 to the to the y-coordinate in (–2, –1).

8-11 Symmetry

1.Give the coordinates of triangle ABC with vertices (7, 2), (1, 2), (4, –5) reflected across the y-axis.

2. Give the coordinates of triangle ABC translated 3 units left and 2 units down.