12/3 Bell Ringer (8th)

Front

Are the triangles similar?

Back

Yes, triangles are similar if their corresponding angles are equal and their corresponding sides are in proportion.

Front

Solve: 7x + 19 = -2x + 55

Back

x = 4

Front

If angle 2 is 70 degrees, what is the measure of angle 1?

Back

Angle 1 = 110 degrees (because the angles are supplementary).

Front

Find x: If angle x + 15 degrees = 30 degrees, what is x?

Back

x = 15 degrees.

Front

What is the definition of similar triangles?

Back

Similar triangles have the same shape but may differ in size; their corresponding angles are equal and their corresponding sides are proportional.

Front

What is the sum of angles in a triangle?

Back

The sum of the interior angles in a triangle is always 180 degrees.

Front

If two angles are complementary, what is their sum?

Back

The sum of two complementary angles is 90 degrees.

Front

What is the formula to solve for x in a linear equation?

Back

To solve for x, isolate x on one side of the equation using inverse operations.

Front

What does it mean for angles to be supplementary?

Back

Supplementary angles are two angles whose measures add up to 180 degrees.

Front

If angle A is 40 degrees, what is the measure of its complement?

Back

The complement of angle A is 50 degrees (90 - 40 = 50).