nc.8.g.5

What is the sum of the interior angles of a triangle?

• 270 degrees

• 360 degrees

• 90 degrees

• 180 degrees

Tags

CCSS.8.G.A.5

If two angles of a triangle are 30° and 60°, what is the measure of the third angle?

• 45°

• 120°

• 75°

• 90°

Tags

CCSS.8.G.A.5

In a triangle, if one angle is obtuse, what can you say about the other two angles?

• The other two angles are straight angles.

• The other two angles are congruent.

• The other two angles are acute.

• The other two angles are right angles.

Tags

CCSS.8.G.A.5

Define similar triangles.

• Triangles with different shapes and sizes, with corresponding angles equal and corresponding sides proportional.

• Triangles that have the same size but not necessarily the same shape, with corresponding angles equal and corresponding sides proportional.

• Triangles that have the same shape but not necessarily the same size, with corresponding angles equal and corresponding sides proportional.

• Triangles that have the same shape and size, with corresponding angles equal and corresponding sides equal.

Tags

CCSS.HSG.SRT.A.2

What is the condition for two triangles to be similar?

• Interior angles are congruent and interior sides are proportional.

• Adjacent angles are congruent and adjacent sides are proportional.

• Corresponding angles are congruent and corresponding sides are proportional.

• Opposite angles are congruent and opposite sides are proportional.

Tags

CCSS.HSG.SRT.A.2

If two triangles are similar, what can you say about their corresponding angles?

• Corresponding angles are not equal.

• Corresponding angles sum up to 180 degrees.

• Corresponding angles are equal.

• Corresponding angles are always acute.

Tags

CCSS.HSG.SRT.A.2

If two triangles are similar, what can you say about their corresponding sides?

• Corresponding sides are proportional.

• Corresponding sides are equal.

• Corresponding sides are perpendicular.

• Corresponding sides are not proportional.

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

How can you prove that two triangles are similar?

• Two triangles are similar if they have the same area.

• Two triangles are similar if their corresponding angles are congruent.

• Two triangles are similar if their corresponding sides are congruent.

• Two triangles are similar if they have the same perimeter.

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

In similar triangles, if the ratio of the corresponding sides is 2:3, what is the ratio of their areas?

• 6:11

• 5:7

• 4:9

• 1:3

If two triangles are similar, what can you say about their altitudes?

• Their altitudes are equal

• Their altitudes are perpendicular

• Their altitudes are proportional to the corresponding sides.

• Their altitudes are congruent

Tags

CCSS.HSG.SRT.A.2